dropinn.磁带杂音信息(落入)
dropvt.落下;跌倒;下降;放弃;漏掉;断绝关系n.滴;微量;减少;滴状物
drop vlave engine带配汽阀蒸汽机
drop section area下落部分
drop one's bundle
drop sb. a line给某人写封短信
drop-irrigation滴灌
drop-down title文首简书名
drop-like heart滴状心, 悬垂心
drop on the floor掉在地上
drop contour line液滴外形轮廓
Drop Landing Zone向下降落地带