ssc2016ssc 发表于 2016-12-23 08:50
蛋蛋的出口速度快 还是你弄得那个阀门关闭快呢?
bigdiger 发表于 2016-12-23 10:54
可惜俺不能给你加分
juny_2016 发表于 2016-12-23 11:49
只能呵呵。初速240m/s计算,0.1s是24m,0.01s是2.4m,0.001s是0.24m,看楼主的示意图,那出口与弹簧处充其量也 ...
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