The paper discussed the average diameter of rain drop, average velocity of moving and falling and the conception of weighted velocity in square root as well as the me - tho...
讨论了雨滴平均直径、平均运动速度、平均降落速度和雨滴加权平方根速度的概念及其计算方法，建立了雨滴平均直径和各种降落速度与雨强、动能的函数关系式。
The crack propagation rate of pipes is mainly dependent on FATT of Steels of pipes (fracture appearance transition temperature). And FATT can be measured by drop weighted tear tests.
管道裂纹的扩展速度主要取决于管道钢的转变温度FATT。FATT可由落锤撕裂试验测定。
The pressing mold can fast, conveniently and accurately press gaps on samples in drop weighted tear tests.
本装置能够快速、方便、准确的加工落锤撕裂试验试样压制缺口。
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