allen wrench 中文意思是什麼
allen wrench
解釋
方孔螺釘頭用扳手-
After the valve has been adjusted to its balance set point and without moving the handwheel, remove the retaining bolt from the end of the handwheel using a 1 / 4 " allen wrench
在閥門調整到平衡點,並且沒有旋轉手輪后,採用一把1 / 4 "通用扳手從手輪末端拆卸固定螺栓。
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