查询词典 dynamical friction

The results show that on dry glass, the cantact area of non-smooth suructure is smaller than that of the slippy sample, so it can reduce friction; yet on a thick liquid surface, the friction of non-smooth surface is larger than slippy surface's.

结构表明在干玻璃表面非光滑结构的接触面积比光滑的要小，具有减粘降阻的作用；而在有一层厚液体膜作媒介时，摩擦力比光滑的要大。

The model of heat conduction caused by friction spark can be regarded as forced convection heat conduction issue of grazing spheriform which is outside of planar stable state boundary layer,so the mathematics analytic formula is presented and a few measures for preventing friction spark.

摩擦火花传热模型可看做是二维稳态边界层外掠球体的强制对流传热问题。

It proves that additive can greatly improve the tribological performances of friction pairs by observing the variance of mating surface topograph, wear mass loss , friction factor and so on.

通过分析对摩表面的形貌特征、磨损量和摩擦因数等方面的变化，结果表明，抗磨添加剂能极大地改善机械系统的摩擦学性能。

The test result showed , the friction coefficient and wear coefficient of neat novolac epoxy would decrease with the content of hardener decrease at unlubricated sliding friction condition.

对制备的无填充树脂和石墨填充树脂固化物的无润滑滑动摩擦磨损性能进行了系统的研究，获得了具有理想摩擦系数和磨损系数的复合物涂层。

The planet friction mechanical infinite speed variator consists of a compressed driving device, a friction drive mechanism and a speed-regulation control mechanism.

行星摩擦机械无级变速机，主要由压紧的主动装置、摩擦传动机构、调整控制机构组成，它的主要优点

At low speed, the higher level of clenching action between the friction pair led to higher friction coefficient.

这归因于低速条件下摩擦副间的自由合程度大，使摩擦系数处于较高值。

The current friction pertains to trade, but future friction could be related to the financial system.

目前涉及到的贸易摩擦，但今后的摩擦可能与金融体系。

In this thesis, the phase diagram of Zn-Al binary system on 10~69.5 w% was reinvestigated by using differential scanning calorimeter, X-ray diffraction and pushrod dilatometer. The process of isothermal transformation during the aging of high-Aluminum-Zinc-based alloy was studied by using differential scanning calorimetry, and the aging behavior of the alloy was analyzed at the aspect of thermal analysis kinetics. The change of microstructure which the alloy was being heated was observed on high-temperature metallurgical microscope. The microstructure and wear-friction properties were compared among the alloys treated with several different heat treatment processes, and a model for heat treatment processes was proposed based on artificial neural network,so as to predict the relationship between friction coefficient and parameters of aging treatment such as aging temperature and time.

本文采用高温X射线衍射、示差扫描量热分析、热膨胀等方法重新测定含锌量范围为10％～69.5％的Zn-Al系二元相图，利用示差扫描量热分析法，研究高铝锌基合金时效等温转变过程，并从热分析动力学的角度分析高铝锌基合金合金时效行为；使用高温金相显微镜观察合金加热时的组织变化；比较几种不同热处理工艺对高铝锌基合金显微组织与耐磨性能的影响并利用人工神经网络建立高铝锌基合金热处理工艺模型，预测合金摩擦系数随时效温度及时间变化规律。

The critical scuffing temperature of friction pairs is not constant and changes with the friction pair operational conditions.

本文研究的成果可用于摩擦副临界胶合的计算，指导摩擦副胶合设计，指导添加剂和润滑油的设计，并为工程选用添加剂提供理论及试验依据。

The newest paper_based composite friction material has a far higher energy absorption capacity than current metal_based material,a high friction coefficient,a low wear ratio,and high thermal stability.

随着新的和高级的离合器和刹车系统的发展，对摩擦材料提出了更高的负荷和更快的速度，即更高的能量要求，并要求有更稳定、更高的摩擦系数、更长的使用寿命和柔和的操作性能。

The second is to cut a mere 100 calories from your diet , which is the equivalent of a tablespoon of butter.

第二个就是从你的饮食中减少一百卡路里，只是相当于一大汤匙的黄油。

This is where the Rorschach test comes in.

现在，罗氏测试就出现了。