有充分的时间
- 与 有充分的时间 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Now we are just concentrated on Istanbul: we have enough time to prepare well .
现在我们要集中精力到伊斯坦布尔:我们有足够的时间做充分的准备。
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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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With the large-scale current of the construction project, as the requirement variety of the construction development impetus actor and the variety of the time and role when the contractors intervention of theproject, the paper brings forward a new pattern of integration management------PLMT mode,which aims at over process disseverment of the construction project、reducing the mutual dissension and conflict of every project actor, and makes the employer have abundant decision-making control right, as well as not to be immersed in idiographic project management.
随着建设工程项目大型化的趋势、作为建筑业发展动力的发包方的需求变化以及承包方介入项目时间和角色的变化,本文提出一种旨在克服建设工程项目过程之间的割裂、减少项目各参与方之间的相互争执和冲突,让发包方既有充分的决策控制权,又不陷于具体项目管理工作的新型集成管理模式——建设工程项目全寿命周期一体化管理模式。
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Being for Heidegger is the historically conditioned individual which is aware of itself and the passage of time.
对海德格尔来说存在指的是历史中确定的个体对自身和时间流逝有充分的意识。
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Immunomodulation therapy can shorten the time of mechanical ventilation and the use of pressor agent, and it does not increase the length of stay and the cost in ICU, and therefore the cost effectiveness is high. It also can prolong the long?term survival time.
免疫调理治疗可以缩短患者机械通气和使用升压药的时间,而不增加ICU的住院时间和费用,有良好的效价比,可以延长远期生存时间,充分显示免疫调理治疗是危重病抢救中成功的治疗策略之一。
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Only if there are sufficient evidences to prove fraud through letter of credit and the bank has not yet paid in a reasonable period, the people's court may order stop payment according to the request of the applicants and on condition that they provide guarantee or security.
只有在有充分的证据证明信用证项下存在欺诈,且银行在合理的时间内尚未对外付款的情况下,人民法院才可以根据开证申请人的请求,并在其提供担保的情况下裁定止付信用证项下款项。
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Firsdy, using the linear matrix inequality method and the concept of finite-time boundness, some sufficient conditions of finite-time boundedness for the linear discrete systems with uncertain exogenous disturbance were derived.
针对一类不确定线性离散系统有限时间观测器最优设计问题,利用线性矩阵不等式方法以及有限时间有界的概念,给出了具有不确定外部扰动输入的线性离散系统有限时间有界的充分条件。
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Mounted on the hull of a Panzer 3 the Sturmgeschuetz is quite fast and powerful in early war maps. Due to the lack of defensive MGs, infantry has an easy time if they come near enough to a StuG. It is a good idea to avoid direct contact with other tanks. Try to hide your StuG somewhere sheltered , away from other tanks and use surprise to your advantage when ambushing other tanks.
安装在Panzer3外壳上的斯特拉姆在早期的战争地图上体现着它的迅捷和大威力,由于缺乏自卫用的机枪,步兵如果靠的足够近,那么就可以赢取很充分的时间,有个好办法就是避免直接与一些坦克交战,尝试隐藏在任何可以保护你的StuG的地方,远离那些坦克如果对你有利的时候迅速冲出并伏击一些坦克。
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In view of all this, there is ample motive to plot and interpret the spatial and temporal patterning of this peculiarly American practice of memorializing the ancient world of Greece and Rome in the place-names of the United States and to search out its possible relevance to the structure of our history and human geography.10 Happily, as is often the case with such forays into terra quasi-incognita, the serendipity factor comes into play.
鉴于所有这一切,有充分的动机来描绘和解释在美国地名上纪念希腊和罗马古代世界,以及探索其与我们的历史和人类地理学的结构的可能关系上,这一奇特的美国惯例的空间和时间上图形。[10] 令人高兴的是,往往这样的向土地准匿名的进军,偶然因素发挥着作用。
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Wenger is continuing to run the rule over trialists Philippe Christanval and Alexandre Song but will wait until the end of the pre-season tour of Austria before making a decision on the pair.
克里斯坦瓦和宋目前还在阿森纳试训,但是温格希望在自己做出决定之前能有更充分的时间,他希望两人的试训持续到奥地利的季前赛结束之后。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。