Because of the small spring easily plug solids, high viscosity medium will move in small delay compensation axial spring.
因为小弹簧容易被固体物堵塞,高粘度介质会使小弹簧轴向补偿移动受阻。
The fatigue life and cumulative damage of ammunition feeding spring in automatic naval gun of medium calibre have been analysed.
本文研究了中口径自动舰炮输弹簧的疲劳寿命及损伤规律。
A iron sword with bronze handle was unearthed in a tomb of Shanrong culture in Yanqing, the age was about the early phase of medium-term of Spring and Autumn period.
延庆山戎文化墓出土了一枚铜柄铁刀,时代约与春秋中期早段相当。
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