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科学时代收录了3405121条科普词条,基本涵盖了常见科普常识及英语词汇的翻译,是科学学习和研究的有利工具。

back tail lever back tangent back taper back tension drawing backtesting
back texture back thrust back-thrusting back thrusting back timing
back title back titration back to BACK TO BACK back-to-back
back to back back-to-back arrangement back-to-back assembly back to back capacitor bank breaking current back to back connection
back to back connection converter back-to-back connection converters back to back converter station back-to-back counter back to back counter
back to back coupling back-to-back credit export first back-to-back credit import first back to back device back-to-back ionization chamber
back to back ionization chamber Back to back L/C back-to-back [letter of] credit back-to-back loan Back to back loan
back to back method back-to-back method back-to-back mounting back to back mounting back to back repeater
back-to-back running back to back running back to back sawtooth wave back to back starting back-to-back starting
back to back synchronous starting back to back test back to back (test) back to back testing back-to-back testing
back-to-basics back-to-basics movement back-to-chest vibration applied to human body back-to-front ratio back to front ratio
back togther; stern all back tone back tongue constriction BACK TO NORMAL back top roller
Back to the Basics back-to-the-school movement back tracing back track backtrack
backtrack algorithm backtracking backtracking algorithm backtracking method backtracking operation
backtracking point backtracking programming backtrack search back transient back- translation
back translation back translator back trapping backtrapping of bubble-cap tray back traverse
back-trough back tube plate back tube plate {boiler} back-twist back twist
back twisting back two-third back-type parachute back up backup
backup back-up backup address register{=BAR} backup adjective backup aircraft authorization
backup aircraft inventory backup air data sensor assembly backup air gap device backup and recovery backup archive client
backup battery backup bit back-up breaker backup breaker back-up{=BU}
backup bus control backup buzzer backup cache backup capability back-up chamber
backup circuit back up circuit backup circuit breaker back-up coating slurry backup communication equipment
backup communication processor backup computer{=BUC} backup concrete backup control signal backup copy
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