单词	first level velocity
释义	first level velocity 平动初速度
随便看	Spring onions spring onion seedling quality spring onions with mutton spring on the North China Plain Spring on the Oder spring opener spring opening spring-operated spring operated band brake spring operated brake spring-operated brake spring-operated fire damper spring-operated gauging V block spring operated institutions me spring-operated magazine spring operated stripper spring-operated stripper spring-operated, throwing arm clay pigeon trap spring operating mechanism spring operation bow-type collector spring operation mechanism spring operative mechanic Spring ophthalmia spring-opposed spring optimization