所有科技知识-科学参考

科学参考收录了1248194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。

pump valve pressing spring	pump valve seat	pump voltage	pump water conduits	pump waveguide
pump wheel	pump work	pump works	pun	puna
punch	punch adapter	punch advance	punch and profile shaping machine	punch and programmed electronic calculator
punch and shear	punch and shears	punch & bind machine	punch block	punch block mechanism
punch boring	punch bowl	punch brush	punch-card	punch card
punch card code	punch card computer	punch-card machine	punch card machinery	punch-card machinery
punch card program	punch card reader	punch card system	punch card transcriber	punch-card transcriber
punch carrier	punch check	punch column	punch combination	punch connection
punch cutting machine	punch die	punch-die	punch displacement	punchdrunk
punched-barb spindle	punched bend	punch(ed) card	punched card	punched card accounting machines
punched cardcalculator	punched-card calculator	punched card computer	punched-card control	punched card controlled computer
punched-card devices	punched-card equipment	punched card equipment	punched-card field	punched card for visual selection
punched card input device	punched-card jacquard mechanism	punched card machine	punched card machine (PCM)	punched card method
punched-card reader	punched card reader	punched-card recorder	punched-card sorter	punched-card system
punched card system (PCS)	punched card terminal	punch edge	punched head	punched hole
punched-hole sieve	punched matrix	punched needle	punched-plate	punched plate screen
punched screens	punched square nut	punched steel plate	punched tape	punchedtape
punched tape code	punched tape collator	punched tape machine	punched-tape program	punched tape programming
punched tape reader	punched-tape storage	punched tape to magnetic tape converter	punched washer	puncheon
puncher	puncherless	punch error	punch flange	punch format
punch forming	punch hammer	punch heel	punch-holder	punch-holder shank
punch hole	punch inclosure	punching	punching and forming automatic	punching and shearing machine
punching bear	punching block	punching column	punching die	punching disc
punching drilling	punching field	punching head	punching hole diameter	punching machine
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