系数

The coefficient of friction for static contact is higher than for dynamic contact, so static contact provides better traction.

此时因为静摩擦系数比动摩擦系数高，所以静摩擦的附着力较大。

Generally speaking, according to the GB 10006 (plastic film and slice method for determination of the coefficient of friction) and ASTM D1894 to film on the surface of dynamic and static coefficient of friction for forward and inverse.

凡是给根据GB 10006(塑料薄膜和薄片摩擦系数测定办法)和ASTM D1894来测定薄膜正反暗不天的不静静摩擦系数。

Therefore, the torque required to open the gate valve required torque than the closure of large, in addition, for a pair of contact between the sealing surface, the Non Rising Stem Resilient Seated Gate Valves coefficient of static friction between them than the dynamic friction coefficient, to make them from the static state generate the relative movement is required to exert greater force to overcome the static friction; due to temperature changes, so that the sealing surface pressure between the larger, need to overcome the static friction force also will be bigger, so that when you open the valve on the stem nut on the sometimes increase the torque exerted a lot.

所以，开启闸阀所需的力矩比关闭闸阀所需的力矩大，此外，对于一对互相接触的密封面来说，它们之间的静摩擦系数也比动摩擦系数大，要使它们从静止状态产生相对运动，需施加较大的力以克服静摩擦力；由于温度变化，使密封面间的压力变大，需要克服的静摩擦力也随之变大，从而使开启闸阀时，对阀杆螺母上施加的力矩有时会增大很多。" Moment analysis of valve operation "是由中国闸阀网提供的国际阀门新闻，译文仅供参考。另外，中国闸阀网还提供相关产品搜索：闸阀型号、闸阀价格、闸阀技术、闸阀新闻、闸阀生产商等。

The results show that thermal conductivity of SiC is inversely proportional to temperature, and the coefficient of linear expansion is directly proportional to temperature.

结果表明，SiC材料导热系数与温度成反比，其线膨胀系数与温度成正比。

Results indicate that each land cover type has uniform rule of backscatter coefficient variation in different time.

研究结果表明，虽然同种类型的地物在同一景雷达图像上的后向散射系数存在一定的差异，但是其后向散射系数随时间的变化规律却是一致的。

The variation coefficient of carbon concentration was smallest for leaves, and largest for roots.

叶的碳浓度变异系数最小，而根的变异系数最大。

The operation of this method is simple, quick and exact, and coefficient of variation is less than 1%.

双波长紫外系数倍率法简便、快速、准确，变异系数小于1％。

The results indicate viscosity coefficient of polymer emulsion

结果表明，乳液的粘性系数随固相材料密度的增大而变小；当固相颗粒数增多或颗粒半径增大时，粘性系数也随之增大。

The measurement method and principle of the temperature dependence of rotational viscosity coefficient of nematic liquid crystal were investigated on a personal computer-based optical system developed by us.

本文设计开发了基于微机的液晶参数测试光学系统，在该系统上研究了液晶的转动粘质系数的测试原理与方法：通过测试液晶盒在偏置电压下相位驰预时间，推导出转动粘质系数的值。

The results indicate viscosity coefficient of polymer emulsion reduce as the density of granule increases, and augment as the number or the radius of granules increase .

结果表明，乳液的粘性系数随固相材料密度的增大而变小；当固相颗粒数增多或颗粒半径增大时，粘性系数也随之增大。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。