underpann.底盘(拖盘)
underprep.低于;在 ... 下;在 ... 内;在 ... 控制下adv.在昏迷中;在 ... 下adj.下面的;从属的;少于的
undersaturated liquid欠饱和液体
underprivileged class弱势阶层
under-expanding jet欠膨胀射流
under one's signature
underdeveloped cities欠发达城市
under-rate sampling欠采样
undercolor separation欠色彩分离法
underapplied expenses[经] 少分配(制造)费用
under the auspices ofadj.由 ... 主办(在 ... 保护下)
under-actuated ship欠驱动船舶