“drop ball”的概念、定义、翻译、参考文献-科学参考

单词	drop ball
释义	drop ball 坠锤
随便看	jumper connection jumper field jumper indicator jumper lift jumper line jumper list jumper locate jumper motion jumper plug jumper skirt jumper steel jumper terminal jumper tester jumper-top blast pipe jumper tube jumper wire jump feed jump field jump frequency jump function jump grading jump hammer jump height jump if not jump in brightness

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。