查询词典 affecting
- 与 affecting 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 order of the factors affecting the teeming time is current intensity, frequency and diameter of the coil.
找出了可以满足出钢要求的最佳电流强度、电源频率和线圈直径参数,实验验证了电磁引流技术可以在工艺要求的条件下完成出钢。
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The cypsela size and variation have big differences between 6 genera. It reflects diverse evolutive level. The altitude is an important factor affecting the size of cypsela and its variation.
6属菊科植物的连萼瘦果大小及变异差别较大,反映出菊科植物的不同进化水平;海拔是影响菊科植物连萼瘦果大小及变异的一个重要因素。
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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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Second, the impact of calcium and phosphorus metabolism, thereby affecting the normal function of bones, causing bone decalcification, bone atrophy, bone density decrease, the elderly and children, osteoporosis, rickets and dental growth retardation.
其次,影响钙和磷的代谢,进而影响骨骼的正常功能,造成骨脱钙、骨萎缩、骨密度降低、中老年人骨质疏松症和儿童佝偻病及牙齿生长发育迟缓。
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Another factor affecting the degree of decentralization is the state of development of control techniques.
影响分权程度的另一个因素是控制技术的发展情况。
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Could a hard drive dedupe data?The Register Headlines -星期四, 11/05/2009 - 21:11Comment Hitachi GST president Steve Milligan says one of the drivers affecting the hard drive industry is the need for efficient storage with technologies like virtualisation and deduplication.
新浪科技讯北京时间11月5日晚间消息,据国外媒体今日报道,一名名为依沃沙普的Facebook开发者发现了位于Facebook和MySpace网站的一个严重安全漏洞,黑客可以利用该漏洞窃取用户帐户的所有数据,包括用户的照片和个人消息等。
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It was pointed out that the defective value of the affecting coefficient X provided by foreign software company should not used blindly.The operating vari ables have certain limitations and should not exceed these limits.
指 出在线工艺计算中不能盲目套用国外软件公司提供的影响系数X的缺省值;鲁棒多变量预估控制器操纵变量有一定的限制,不能超出范围。
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Mass-spectrum scan is conducted for the remaining gas in insulating layer. It is discovered that, the steam, CO_2 and hydrocarbon are main factors affecting the vacuum degree of the layer. Degasification process shall be applied to remove the remaining gas and to extend the service life.
通过室内实验,对隔热夹层中的残气进行了质谱扫描,发现水蒸汽、CO2 和碳氢化合物是"污染"夹层真空度的主要因素,可应用除气工艺消除隔热夹层中的残气,以延长高真空隔热油管的使用寿命。
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Through the application of orthogonal method in the design of dehydrator,the text analyzed the result of experiment in variance,ascertained parameter's affecting in the design of dehydrator.
通过在除水器设计实验中应用正交法,使其在大量减少实验次数的前提下能够大致反映全面的实验结果,对实验结果进行方差分析,确定除水器设计中主要参数外圆直径、叶片切向角、叶片高度、叶片数目对脱水性能影响的程度,进行优化,为除水器设计中获取最佳设计参数提供科学依
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Civil Zhaojun the deification of the literati and the praise of Zhaojun is affecting each other, so deified in this paper to study the civil Zhaojun as the main target, but also of the literati and have a tendency to deify.
民间对昭君的神化和文人对昭君的赞美又是互相影响的,本文以研究民间神化了的昭君为主要对象,同时也兼及文人有神化倾向之作。
- 推荐网络例句
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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
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The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
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When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。