wrench end的用法和樣例：
例句
- While unscrewing the injector button head, a second wrench must be used to assure that the injector body is not loosened from the main valve.
在擰松注入器圓頭螺栓時，要用第二個扳手固定住注入器，防止其從主閥門上松落下來。 - A wrench used for turning large pipes,an adjustable chain circles the pipe with its ends connected to the head whose teeth engage the pipe.
用來旋轉大的管道的扳手，一個可以調整的鏈條其頭尾部連在管道頭部鋸齒合在管上。
