primary crater
常见例句
- The primary results obtained involved the evaluation of army ballistic limit, and measurement of crater volume and crater depth.
評定鋼靶板的背麪強度極限，測量靶板彈坑容積和深度，對影響靶板抗彈性能的彈靶因素進行了分析。 - Indeed, smashing into the moon's surface is the primary objective of LCROSS (the name stands for Lunar CRater Observation and Sensing Satellite).
事實上，與月球表麪碰撞是 LCROSS（全稱爲月球環形山觀測和遙感衛星）的主要目標。 返回 primary crater