launchingn.发射；（船）下水动词launch的现在分词形式.launchv.发起；推出（新产品）；发射；使(船)下水n.发射；产品推介Launch Motor Test发射发动机试验launching carrier发射载体launching control发射控制launch a movement开展活动launch conditions发射条件launching trolley滑曳空中吊车launch a business开办商店launch trajectory发射弹道launching ambient发射药launching vehicle发射车