冲击电动扳bai手主要是初紧螺栓的，它的使用很简du单，就是对准螺zhi栓扳动电源开关就行。
The main purpose of the impact electric wrench is to tighten the bolt initially. It is very simple to use, which is to pull the power switch at the bolt.
电动扭剪扳手主dao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。
If the main Dao of the electric torsion shear wrench is used to tighten the high-strength bolt, its use is to align the bolt and pull the power switch 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。
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.
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 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.
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