“hand punch”的概念、定义、翻译、参考文献-科学参考

单词	hand punch
释义	hand punch [`hand ´pǝnch] ^{COMPUTER SCIENCE} A device which punches holes in punch cards and moves the cards as they are punched as a direct result of pressure on the keys of a keyboard, and which requires feeding and removal of cards by hand, one at a time. Also known as hand-feed punch. ^{DESIGN ENGINEERING} A hand-held device for punching holes in paper or cards.
随便看	combined sewers combined stresses combined water combine-harvester combiner circuit combing combing machine combining glass combining network combining-volumes principle combining weight comb nephoscope combplate combustible gas combustible loss combustible shale combustion combustion chamber combustion-chamber volume combustion deposit combustion efficiency combustion engine combustion engineering combustion furnace combustion instability

科学参考收录了103327条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。