The relation between the deformation degree, blow speed and forging density was analysed.
分析了变形程度、打击速度与锻件密度之间的关系。
The upsetting test of metal powder sintered preform by blow speed of the hydraulic press, crank press, pneumatic hammer and high energy rate forging hammer was reported.
研究了用液压机、曲柄压力机、空气锤及高速锤的打击速度对粉末冶金烧结体进行的镦粗试验。
Gusty winds may blow out of a thunderstorm at speed in excess of 75 miles an hour.
阵风可以以每小时75英里以上的速度从雷暴中吹出。
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