underdry干燥不良
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
undersea fiber-optic connector海底光纤连接器
under the direct jurisdiction of直属于
underactuated mechanicod systems欠驱动机械系统
under the supervision of someone在某人监督之下
underglaze blue on celadon ground青釉地青花
Underlying surface classification下垫面分类
under - film trickle irrigation膜下滴灌
underglound powerhouse excavation地下厂房开挖