practice exploder训练: train; drill; manage; practi ...引信: detonator; fuse; fuze深水炸弹教练引信: exercise fuse of depth charge引信: detonator; fuse; fuze 触发引信 contact fuse; 延期引信 delay fuse 精练引发皱缩: slippage scouring下载手机词典可随时随地查词查翻译