- 更多网络例句与使下降相关的网络例句 [注：此内容来源于网络，仅供参考]
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The effect of tribology factors on bearing vibration is studied experimentally. AR model and WPT are used to processing the normal arid abnormal signals. The results are as follows:1. The vibration of ball bearings is caused by the tribology action of contact pairs of ball and ring races and has the essential of tribo-dynamics. Any factors affecting the tribology characteristics of contact pairs will affect vibration and noise of bearings consequently.2. Vibration characteristics of bearing keep almostly unchanged with the increasing of axial load expecting the increasing of nature frequencies. When radial load increasing with axial load unchanged, nature frequencies keep unchanged but some new vibration peaks appears in the spectrum.3. Vibration amplitudes are damped and nature frequency are enhanced with sufficient lubrication. Vibration and noise of bearings increase obviously and roar can happen and the contact surfaces scratch slightly under insufficient and unclean lubrication state. Bearing will be disabled in a few minutes without any lubrication.4. Bearing vibration is unstable under low speed. With the speed increasing, the vibration become stable and natural frequencies increase slightly but the amplitudes increase apparently.5. Bearing vibration can be excited only by some harmonics ofwaviness without lubrication and by all harmonics with lubrication based on the theoretical analysis.6. The nature frequencies of ball bearings decrease with the increasing sizes. When international clearance increasing, nature frequencies decrease in radial and increase in axial and angular and the amplitudes increase in radial and decrease in axial and angular. When the number of balls increasing, nature frequencies increase and amplitudes decrease. When the pitch diameter increasing, axial nature frequency increase and others nearly keep no change. When outer race groove curvature radius increasing, nature frequencies increase in radial and decrease in axial and angular and amplitudes keep no change in radial and increase in axial and angular. When inner race groove curvature radius increasing, nature frequencies decrease and amplitudes increase.7. The distortion in amplitude and frequency components of bearing vibration signals picked up by the present probe measurement method is founded and right conclusions cannot be achieved by the signals. When accelerometer is rigidly screwed with steel stud onto a flat outer surface of a ball bearing, vibration signal can be got without distortion and the reliability of research on bearing vibration is assured.8. AR model is suitable for large samples of bearing vibration signals, square root of length of samples can be used as the upper limitation of order determination and the FPE order selection criterion is effective. Many advantages of AR spectrum are founded over the classical based on FFT.9. Time-Frequency analysis is necessary for abnormal noise of ball bearings. WPT overcomes the principle shortcomings of STFT and proved to be a best tool to process the abnormal signals.
理论分析和试验研究表明： 1球轴承振动是钢球—滚道接触副中的各种摩擦学作用引起的，具有摩擦动力学的本质，任何对接触副的摩擦学特性有影响的因素都将对球轴承的振动和噪声特性产生影响； 2中心轴向载荷作用下，载荷增大使球轴承的固有振动频率升高，载荷越大同样的载荷增幅引起的频率升幅减小，足够大的中心轴向载荷作用下载荷的变化对球轴承振动的频率特性不会产生明显的影响； 3轴向和径向联合载荷作用下，径向载荷不大时球轴承振动的固有频率基本不变，但是可能引起变刚度激励的非线性振动，出现新的频峰，过大的径向载荷将使部分钢球脱离接触，使球轴承的振动和噪声呈现不稳定状态； 4润滑对球轴承的振动和噪声特性有重要的影响，良好的润滑对振动有明显的抑制作用，润滑不充分时，振动和噪声的水平会有明显增高，一定条件下还会激发接触副中的谐振，发出啸声，造成接触表面的伤害，无润滑干接触时，短时的运转就会损伤接触副表面，使振动和噪声迅速增大，并随时可能引发严重的磨损和卡滞失效；接触副润滑良好时，油膜的"刚化效应"使球轴承振动的固有频率有所提高，润滑剂中含有弥散性污浊时，振动的幅度总体升高，但弥散性污浊不会改变球轴承振动的频率特性；浙江大学博士学位论文：球轴承振动的研究 5低速时，球轴承振动的基本特征呈现不稳定状态，随着转速的提高，球轴承振动的频率特性趋于稳定，固有频率频峰升高； 6理论分析表明，干接触时钢球和滚道表面波纹度的某些谐波分量能激励球轴承的振动，振动的幅值与谐波幅值成正比，实际球轴承中钢球的分布不可能完全均匀，波纹度的激励作用会随时发生；润滑接触的分析表明，波纹度的任意谐波分量均能激励球轴承的振动； 7球轴承的几何和结构参数分析表明，球轴承尺寸越大，径向、轴向和角振动的固有频率越低；钢球中心圆直径增大，球轴承的径向和轴向振动的固有频率基本不变，角振动的固有频率有所上升，振动的幅频特性基本不变；径向游隙加大使球轴承的径向振动固有频率降低，轴向和角振动的固有频率有所升高，径向振动幅频特性的幅值升高，而轴向和角向降低；钢球的数量增多使球轴承振动的固有频率上升，幅频特性的幅值下降，径向振动的幅值下降最为明显；外圈沟曲率半径系数增大使球轴承径向振动的固有频率升高，轴向和角振动的固有频率降低，径向幅频特性基本不变，轴向和角向幅频特性幅值升高；内圈沟曲率半径系数增大使径向、轴向和角振动固有频率均下降，振动幅频特性的幅值均有升高； 8试验对比表明，传感器采用探针式安装时，由于探针接触副接触特性的影响，钡(量得到的球轴承振动信号有失真，采用专门设计和制作的试验球轴承，以固定式安装加速度计，首次测量得到了球轴承振动的真实信号，通过对振动信号的分析，验证了球轴承振动的理论模型； 9)基于时间序列分析的AR模型适用于大样本球轴承振动信号的分析，以样本长度的均方根值作定阶上界，FPE做判阶准则，给出的AR谱光滑，频率分辨率高，是球轴承振动分析的简便而可靠的手段； 10以时频域分析的小波包变换分析球轴承异音信号能够比较好地定位和聚焦异音发生的时间，时间间隔，频率范围，同样是球轴承振动分析的可靠的手段，可用作球轴承故障诊断技术。
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Someone is tossing petals in a stream Somewhere someone is standing at the foothills of their dreams Someone got a paintbrush, is painting over doubts Someone opened up his eyes and saw the sun coming out Someone was captive and found the courage to get off From a boulder in the well, somewhere the rain has stopped Someone is finding the place where they belong Everyday is summer somewhere in the world And the summer boys are headed for the falls to kiss the girls With their impatient hands groping honey breasts and curls They are filled with desire And high in the hills there's a baby being born As forgiveness and peace wash over bruises and sores People bridging the distance over nettles and thorns Everyone aboard on the merry-go-round Some things will rise up so that others come down If the devil don't dance, heaven won't shine It's a mighty thick haze and it's a pretty thin line If the facuet is tightened up the love won't flow If the love isn't bright enough the corn won't grow If the night isn't dark enough the moon won't glow A rich man counting money, a tired man counting sheep While the safe man counts his blessings, the hungry man has beans There's a million people praying, raising up their eyes To what turns out to be the same god, the same sky We are slightly scared of death, a little bit afraid So we celebrate everything we can think to celebrate We shall sing out loud to keep the hounds away Everyone aboard on the merry-go-round Some things will rise up so that others come down If the devil don't dance, heaven won't shine It's a mighty thick haze and it's a pretty thin line If the facuet is tightened up the love won't flow If the love isn't bright enough the corn won't grow If the night isn't dark enough the moon won't glow Prisons will crumble and governments will fall It's the order of freedom to be preceded by walls Cause the truth would be worthless if no one ever lied So we carry our shame in the interest of pride And we have all these questions to make us go roam And we've got all this distance to make us come home As the sun burns, a child learns, the tide churns, the world turns Everyone aboard on the merry-go-round Some things will rise up so that others come down If the devil don't dance, heaven won't shine It's a mighty thick haze and it's a pretty thin line If the facuet is tightened up the love won't flow If the love isn't bright enough the corn won't grow If the night isn't dark enough the moon won't glow
有人扔花瓣在流某处有人站在山脚下的他们的梦想有人了画笔，画的是怀疑有人打开了他的眼睛，看到太阳出来有人圈养和发现的勇气下车从巨石的很好，某处雨已停止有人的地方发现它们属于日常是夏天在世界一些地方和夏季男孩前往瀑布亲吻女孩不耐烦的手与他们摸索蜂蜜乳房和卷发他们是充满希望和高的山上有一个婴儿出生作为宽恕与和平洗了伤痕和疮人民缩小距离，荨麻和荆棘 93号航班上的旋转木马有些东西会起来，使其他人下降如果没有魔鬼舞蹈，天上不会服务这是一个强大的浓雾，这是一个非常薄线如果是加紧facuet的爱将不会流如果爱情是没有足够明亮的玉米不会增长如果是没有黑暗的夜晚足够月球不会发光富翁数钱，一个疲惫的人计数羊虽然安全的人把他的祝福，在饥饿的人有豆有100万人祈祷，提高了他们的眼睛什么结果是相同的上帝，同样的天空我们稍微害怕死亡，有点害怕因此，我们庆祝所能想庆祝我们将唱大声保持距离猎犬 93号航班上的旋转木马有些东西会起来，使其他人下降如果没有魔鬼舞蹈，天上不会服务这是一个强大的浓雾，这是一个非常薄线如果是加紧facuet的爱将不会流如果爱情是没有足够明亮的玉米不会增长如果是没有黑暗的夜晚足够月球不会发光监狱将崩溃和政府将下降有秩序的自由之前，墙壁原因真相将是毫无价值的，如果没有人说谎因此，我们在履行我们的耻辱的利益骄傲和我们所有这些问题让我们去漫游我们还有这一切的距离，使我们回家太阳灼伤，儿童学习，潮流，提供世界轮流 93号航班上的旋转木马有些东西会起来，使其他人下降如果没有魔鬼舞蹈，天上不会服务这是一个强大的浓雾，这是一个非常薄线如果是加紧facuet的爱将不会流如果爱情是没有足够明亮的玉米不会增长如果是没有黑暗的夜晚足够月球不会发光
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The solid flow rate of downflow of inlet gas was slightly less than that of horizontal flow of inlet gas. But the standard deviation of pressure signals of downflow of inlet gas decreased significantly, causing more stable operation.
由不同通气方向来看，通气方向向下时的固体流量虽略小於水平方向通气，但可使下降管中的压力扰动明显减少，即可得到较稳定的操作。
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In the redispersable powders, WACER powder is excellent. When fine percentage of redispersable emulsoid powder is 1, toughness, adhesive performance of mortar have improved.(3) When MC was mixed into mortar, water-retentive performance, toughness, adhesive performance of mortar have improved and 28d dry shrinkage of mortar has reduced.(4) When AEA was mixed into mortar, dry shrinkage of mortar reduced and infiltration resistance has improved.(5) When cement-to-sand ratio is 1:2.5 , toughness of mortar is perfect.
2WACKER的VAE和551Z两种乳胶粉的效果较好，最佳质量掺量均为1%，对砂浆的和易性、韧性、粘结性能均有较大改善；(3)在干拌砂浆中加入MC保水剂后，砂浆的保水性提高，韧性得到改善，粘结性能也得到了增强，砂浆的28d干缩值也有所下降；(4)砂浆中加入AEA膨胀剂后，砂浆的干缩下降，抗渗性也有一定提高；(5)灰砂比为1：2.5是较为理想的，砂浆的和易性较好，韧性较好；(6)砂浆中加入掺合料可以使砂浆的韧性得到提高，但是会使砂浆的粘结性能下降。
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Treated with 5~80mg/L SA, destroyer of nectarine flowers were faint, electrolyte exosmosis rate and the content of MDA decreased obviously. Treatments with 5~25mg/L SA resulted the activity of SOD increased, but 45~80mg/L SA made it decreased obviously.
经5~80mg/L SA处理的桃花，雌蕊形态恶变减轻，电解质外渗率和MDA含量显著下降；5~25mg/L SA处理使SOD活性显著升高，但45~80mg/L SA处理使SOD活性显著下降；25mg/L SA处理使POD活性升高，其它处理使POD活性下降。
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Its mesmeric 催眠术的,使人迷惑的 steel frame, 41,875 tonnes in all, loops,swoops and swirls 打漩,盘绕 over and around the great, red, concrete91,000-seat arena.
它那令人迷惑的钢架总重量达41875吨，在共有9.1万个座位的巨型红色水泥的体育场之上回环、下降、盘旋。
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Results: Porphyrin nitrogen mustard (5 μg/ml ) decreased the D value of human liver cancer cell line SMMC7721. The activity of LDH was increased after laser irradiation. The3H-TdR of human liver cancer cells was decreased with or without laser.
结果：卟啉氮芥(5μg/ml，培养1h)可使人肝癌细胞SMMC7721D值明显降低、经光激发可使培养上清LDH活性显著升高；可使体外培养人肝癌细胞SMMC7721的3H-TdR掺入量显著下降、经光激发可使体外培养人肝癌细胞SMMC7721的3H-TdR掺入量进一步显著下降。
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The effects of many factors in the wet end on drainage and retention of PEO/attapulgite system: During the scope of 2-12, pH has no effect on drainage, and retention ratio lower in acidic conditions and higher in neutral or alkaline conditions. There were some improvement on slurry's drainage and some impairment on retention efficiency for the existence of inorganic salts. Lignosulphonate had no effect on drainage and made retention ratio decrease 5-8%; lignosulphonate and xylan had no effect on drainage and made retention ratio decrease a little. 5 .Attapulgite could be modified by intercalation.
纸机湿部系统的影响因素对PEO／凹凸棒粘土助留体系的助留助滤效果的影响表现为：pH值在2-12范围内，对助滤效果是没有影响的，使助留效果在酸性条件下较差，而在中碱性条件下较好；无机盐的存在使浆料的滤水性能有一定的改善，使助留效果有所削弱；木质素磺酸盐对助滤效果是没有影响的，使留着率下降了5—8％；木质素磺酸盐与聚木糖对助滤效果也是没有影响的，使留着率略有下降。
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Activity of s AChE and GSTs was elevated in 4 strains,of which the activity of AChE and GSTs in KFQ strain and BYS strain was 1.57 fold and 2.33 fold respectively compared with susceptible strain.Activity of AChE and GSTs was decreased in one strain,activity of AChE was elevated but activity of GSTs was decreased in other 3 strains.
有4种品系可使AChE和GSTs活性提高，其中KFQ品系、LD品系与敏感品系相比，AChE的活性分别提高了1.57倍和1.44倍；BYS品系使GSTs活性提高了2.33倍；有3种品系可使AChE活性提高，使GSTs活性下降；另有一种品系使AChE和GSTs活性均下降。
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It was observed as follows:(1)The body temperatureof the cord transectedanimals fell in a good agreement with ambient temperature.It appears thatthe fall in B.T.is one of the main causes inducing ulceration.(2)Administrationof epinephine decreased ulceration and prevented the fall in B.T.both in a dose-dependent manner.(3)Cord transection induced ulcer formation was markedlyattenuated by adrenalectomy and exacerbated aga...
结果表明：(1)脊髓横断动物的体温随环境温度而下降，体温的下降可能是诱发溃疡的重要原因之一；(2)注射肾上腺素可减轻溃疡和防止体温下降，且两者均呈剂-效关系；(3)切除肾上腺可使脊髓横断诱发的溃疡明显减轻，如补充注射地塞米松则可使之重新加重，但体温的下降在以上情况下均不受影响；(4)脊髓横断后胃粘膜泌酸和内分泌功能的改变可能与溃疡生成有关。
- 更多网络解释与使下降相关的网络解释 [注：此内容来源于网络，仅供参考]
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bring force：使产生,引起
bring about使倒下,使下降 | bring force 使产生,引起 | bring forward 提出建议=put forward/提前
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使倒下,使下降 bring force 使产生,引起：bring about =cause, result in, lead to bring down
bring about =cause, result in, lead to bring down 使倒下,使下降 bring force 使产生,引起 | bring forward 提出建议=put forward/提前 | bring in =get in the pops 使得到某种收入
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bring sb back to sth：使某人恢复某事物
bring sth back 送回某事物/恢复某事物/回想起某事物 | bring sb back to sth 使某人恢复某事物 | bring down 使倒下,使下降
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cast down：使......沮丧;使下降
cast away丢掉、抛弃...... | cast down使......沮丧;使下降 | cast off抛弃......;使......自由
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come down：下来;下降
bring down 使下降;使泄气 | come down 下来;下降 | cut down 减少开支;砍倒
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immunization：使免疫
蛋白质缺乏,会使犬体内蛋白质代谢失去平衡,引起食欲下降、体重减轻、生长缓慢、血液内蛋白质含量降低,使免疫(immunization)力降低. 公犬精液品质下降、精子数量减少. 母犬发情异常、不受孕,即使受孕,胎儿也常因发育不良而发生死胎或畸胎.
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nose down：(飞机机首朝下)(使)下降
keep [hold, bring, put]sb.'s nose to the grindstone 折磨某人; 不给某人片刻休息 | nose down (飞机机首朝下)(使)下降 | nose into 驶往; 打听; 干预
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send down：使下降, 开除
I sent away for some rare books. 我函购了几本罕见的书. | send down 使下降, 开除 | As he was bad behaviour, he was sent down by the university. 由于他恶劣的行为被校方开除了.
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send down = cause to go down：使下降
send back 退还不要, 退货, 发送回来 | send down = cause to go down 使下降 | send for 派人去请/取, 叫; 去信索取, 邮购
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avale：使下降 放低 沉下, 流下
avalanchologist || 研究雪崩的专家 | avale || 使下降 放低 沉下, 流下 | avalement || 下坡转弯加速