凿孔机
záo kǒng jī
- perforator;puncher;punch;mortising machine
凿孔机
凿孔机[záo kǒng jī]
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大中孔凿岩爆破计算机辅助设计软件开发与研究纸带穿孔器纸带凿孔机
Development of Software for Large / Moderate Diameter Blasthole Drilling and Blasting CAD
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纸带穿孔器纸带凿孔机GB/T6247-1986凿岩机械与气动工具名词术语
Terminology of rock drilling machines and pneumatic tools
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纸带穿孔器纸带凿孔机计算机化锈花穿孔机
Computerized embroidery punching machine
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最早的电报系统配备有键盘凿孔机，当有新的电报发来时，收方根据电码表就能确定信息的内容。
The earliest electric telegraph systems involved numbered needles on a board that , when a transmission came in , pointed to corresponding letters of the alphabet .