​冲击电动扳手bai主要是初紧螺栓的，它的使用很du简单，就是对准螺栓扳动电源开关就zhi行。电动dao扭剪扳手主要是终紧扭剪型高强螺栓的，它的使用就是对准螺栓扳动电源开关，直到把扭剪型高强螺栓的梅花头打断为止。

The impact electric wrench Bai is mainly used to tighten the bolt. It is very simple to use, that is, to align the bolt and pull the power switch. The main purpose of the electric Dao wrench is to finally tighten the high-strength bolt. Its use is to pull the power switch in alignment with the bolt until the plum head of the high-strength bolt is broken.

电动定扭矩扳手既可初紧又可终紧，它的使用是先调节扭矩，再紧固螺栓。电动转角扳手主要也属于定扭矩扳手的一种，它的使用是先调节旋转度数，再紧固螺栓。电动角向扳手是一种专门紧固钢架夹角部位螺栓的电动扳手，它的使用和电动扭剪扳手原理一样。

The electric constant torque wrench can be used for initial tightening and final tightening. Its use is to adjust the torque first and then tighten the bolts. Electric angle wrench is also a kind of constant torque wrench. Its use is to adjust the rotation degree first, and then tighten the bolt. The electric angle wrench is a kind of electric wrench specially used to tighten the bolts at the angle of steel frame. Its use is the same as that of the electric twist shear wrench.