... 梁 beam 楼梯梁 bridge board; bridgeboard; stair stringer; stringpiece 槽钢楼梯梁 channel stringer ...
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... 的 4次方是 The fourth power of 2 i ... 横木 stringpiece; transom; byatt 马车前端用以系曳绳的横木 whippletree ...
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stringpiece man 码头边装卸工人
N a long horizontal timber beam used to strengthen or support a framework 横梁
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