“pretravel”的概念、定义、翻译、参考文献-科学参考

单词	pretravel
释义	pretravel [`prē´trav·ǝl] ^{CONTROL SYSTEMS} The distance or angle through which the actuator of a switch moves from the free position to the operating position.
随便看	bayleyite baymouth bar bay oil bayonet bayonet base bayonet coupling bayonet Neil-Concelman connector bayonet socket bayonet-tube exchanger bayou bay rum bay-rum tree bayside beach bay window bazooka bazzite B battery BBC BBD B-B fraction BB gun B bit bbl B blasting powder B box

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。