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 satellite发射卫星launch a program启动程序launch a missile发射导弹launching device发射装置launching weight下水重量launch conductor发射指挥官launch equipment发射装置launch a protest提出抗议launching gantry架桥机launching grease船用润滑脂