初始投放条件
initial release condition
电子式井下仪器投放仪
Electronic Throwing in Apparatus for Down Hole Instrument
飞机投放挂架
Load releasing mechanism for planes
干扰弹投放器
disturbance bomb throwing device
广告投放效果
the Effect of Advertisement
回转投放式悬挂装置
rotary dropping suspension equipment
控制现金投放
control currency issuance