逆流分布装置
counter-current distribution apparatus
逆流分溶装置
countercurrent distributor
逆螺纹操舵装置
reversed screw steering gear
尿检装置自动送信系统
urine test device automatic messenger system
尿素蒸发系统喷射装置
ejecting unit in urea steam system
凝固点测量装置
measuring device for freezing point