“origin of the trajectory”的概念、定义、翻译、参考文献-科学参考

单词	origin of the trajectory
释义	origin of the trajectory [`är·ǝ·jǝn ǝv thǝ trǝ`jek·tǝ·rē] ^ORDNANCE Center of the muzzle of a gun at the instant when the projectile leaves it.
随便看	foot footage foot-and-mouth disease foot block foot breadth foot bridge footcandle footeite footer foot gland foot guard foothills foot holes footing footlambert foot length footpad footpoint foot-pound foot-poundal foot-pound-second system of units footprint foot rot foot screw foot section

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。