| 单词 | 工件 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔center punch〕A tool with a sharp point used in metalworking to mark centers or center lines on pieces to be drilled.中心冲：在金属加工中用于标出被钻孔的工件中心线的带锐利尖头的工具美国传统〔center〕A bar with a conical point used to support work, as during turning on a lathe.中心杆：带锥形顶尖的用来支撑加工件的条杆，如开动镟床时所用美国传统〔center〕A small conical hole made in a piece of work with a center punch so that a drill can be accurately positioned within it.中心孔，转柄孔：在带中心冲头的工件上为使钻头准确放置而做的小锥形孔美国传统〔drill press〕A powered vertical drilling machine in which the drill is pressed to the work automatically or by a hand lever.钻床：一种直立的钻孔设备，它的钻头靠手柄或动力压在工件上美国传统〔faceplate〕A disk attached to the mandrel of a lathe to hold the work to be turned.面板：安装在车床活动芯轴上以使工件转动的盘美国传统〔job〕He held the job in his right hand.他右手握着工件。外研社新世纪〔set ... out〕Before cutting, he set a workpiece out.车削前他先在工件上画了线。21世纪英汉 |
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