沖擊電動扳bai手主要是初緊螺栓的，它的使用很簡du單，就是對準螺zhi栓扳動電源開關就行。
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.
電動扭剪扳手主dao要是終緊扭剪型高強螺栓的，它的使用就是對準螺栓扳動電源開關，直到把扭剪型高強螺栓的梅花頭打斷為止。
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.
電動定扭矩扳手既可初緊又可終緊，它的使用是先調節(jié)扭矩，再緊固螺栓。電動轉角扳手主要也屬于定扭矩扳手的一種，它的使用是先調節(jié)旋轉度數(shù)，再緊固螺栓。
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.
電動角向扳手是一種專門緊固鋼架夾角部位螺栓的電動扳手，它的使用和電動扭剪扳手原理一樣。
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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