box spanner
柯林斯词典
1. N a spanner consisting of a steel cylinder with a hexagonal end that fits over a nut: used esp to turn nuts in positions that are recessed or difficult of access 琯鉗子
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box spanner
剑桥词典
- a metal tool with a six-sided end that is used for tightening nuts
套筒扳手，琯鉗子 返回 box spanner