weeper drain;weep drain;drainage ditch;drain ditch 排水沟
drain castinghollow casting drain tile 排水瓦管
‘zero’ drain 总最佳连接; 零排放
acid drain cleaners 酸性通渠剂
active drain hold-up tank 放射性疏水暂存箱
active drain tank 放射性疏水箱
active-effluent drain pipe 放射性废液排放管道
actuator oil drain 致动器机油排放
aft water drain mast 后排水杆
after drain line 尾部泄水管路
aftercooler air chamber drain 后冷器进气腔排放
aftercooler drain 后冷器排放
agricultural drain 农用排水沟
agricultural drain pipe 农用排水管
air drain 通风孔; 气槽; 通风道
air drain valve 放气阀
air inlet drain 进气管漏放口
airdrain 气眼
Application of Pneumatic Drain Device 气动排污装置的应用