davis血型抗原 blood group antigen davis; blood group antigen minnie pearl davis
davis血型抗体 blood group antibody davis; blood group antibody minnie pearl davis
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例句与用法
Technical requirement for lifeboat davit installation 吊艇架装置技术条件
Specification for two tonne general purpose davits 两吨式通用吊艇柱规范
Ships ' boom davits for general use 船用一般吊杆
Inspection the structure and loading test of the lifeboat ( rescue boat ) davit 救生(助)艇吊架结构和压重试验。
Ships ' davits for general use 船用普通吊艇杆
Rescue boat davit ( life raft davit ) to be done static ( dynamic ) loading test 救助艇架(救生筏吊架)静(动)负荷试验。
Anchor davit socket 吊锚杆承座
All sheaves and rollers of life boat davit to be overhauled , cleaned , greased and reassembled 所有救生艇吊柱,滚轮,滑车,拆检,清洁,加油并装妥。
英文解释
a crane-like device (usually one of a pair) for suspending or lowering equipment (as a lifeboat)
百科解释
A davit ( or ) is a structure, usually made of steel, which is used to lower things over an edge of a long drop-off, such as lowering a maintenance trapeze down a building or launching a lifeboat over the side of a ship.