2025-09-09 14:59 浏览次数 8
省吃俭用
勒紧腰带
tighten their belt勒紧腰带
tighten its belt扣紧安全带
tighten ones belt过紧日子
Tighten the belt缩紧预算
tighten your belt节衣缩食
belt tighten勒紧裤带
the flow conservation law of belt drive is introduced and the conclusion that the tension difference between the tighten belt and the looser leads to speed difference is proved.
介绍了皮带流量守恒定律,根据此定律论证了皮带松紧边拉力差导致速度差这一结论。