砣子的英文

an emery wheel for cutting or polishing jade

例句与用法

1. The direction of cultivation float raft is down the flow , the spacing of raft is 5m , nail the wooden stake or stone roller at the both ends of raft to fix the raft body
   我公司养殖浮筏方向，均为顺流设筏，筏距5m ，在筏身两端打木橛或下砣子固定筏身。