基本解释[土木建筑工程]碰球英汉例句双语例句The landing collar comprises housing, ball seat and latch.由外壳、锁紧座和球座等组成。It comprises setting-ball carrier, latch collar and baffle.由送球器、锁紧座、挡板组成。词组短语短语ball joint cover latch 球节盖闩专业释义土木建筑工程碰球