查询词典 drop -out

drop hammer test：落鎚试验,落重试验

"drop hammer driver","落鎚打椿机" | "drop hammer test","落鎚试验,落重试验" | "drop hanger","吊架"

drop in：顺便访问

14.drop by 顺便访问 | 15.drop in 顺便访问 | 16.drop off 减弱

drop in pressure：压力降低

drop hammer落锤 | drop in pressure压力降低 | drop lubrication滴油润滑

drop in beam：挂梁

drop heating system 下给式供热系统 | drop in beam 挂梁 | drop penetratoin test 动力触探试验

drop in on：顺道拜访

drop down 卧倒 | drop in on 顺道拜访 | drop in 顺便走访

drop in on：拜访(后接人)

drop in at 拜访(后接地点) | drop in on 拜访(后接人) | drop across 串门,偶遇

drop keel：中插板

drop keel 滑动龙骨;下垂龙骨 | drop keel 中插板 | drop line valve 下舱阀

drop keel：滑动龙骨;下垂龙骨

drop into 开进 | drop keel 滑动龙骨;下垂龙骨 | drop keel 中插板

drop keel：滑动龙骨

落锤 drop hammer | 滑动龙骨 drop keel | 落冲 drop stamp

drop letter：[美国习惯用语]托人由一地带到另一地付邮的信件

drop leaf (桌子的)活动翻板. | drop letter [美国习惯用语]托人由一地带到另一地付邮的信件. | drop like a hot potato 急忙抛弃. 尽快地断绝关系.

leukemia virus：白血病病毒

leukemia 白血病 | leukemia virus 白血病病毒 | leukoplast 白色体

normal population：常态群体

Normal law of error 常态误差定律 | Normal population 常态群体 | Normal probability curve 常态机率曲线