单词lever action
un.: 扳机框转拉式退壳
网络: 杠杆式；杠杆式步枪；杠杆式枪机
扳机框转拉式退壳
Later systems had radially mounted shoes to provide more stable contact through lever action.
后面的系统放射状设置集电靴通过杠杆作用来提供稳定接触。
You can see the lever action very clearly.
您可以非常清楚地看到杠杆的运动。
Lever action of maths in solving physics problems
数学在解决物理题中的杠杆作用