词汇	back flow valve
释义	back flow valve n.回流防止阀
随便看	disease of plant disease of plants disease of pleura disease of pluripotent stem cell disease of polygenic inheritance disease of poultry disease of poultry embryo Disease of pregnancy Disease of presumed infectious origin Disease of tendon sheath Disease oftenfollows malnutrition Disease of prostate Disease of pulmonary circulation disease of pulmonary tuberculosis Disease of pulp of tooth disease of qi-blood-body fluid disease of rectum Disease of renal pelvis disease of respiratory system Disease of retina Disease of rib disease of rice Disease of salivary gland Disease of scrotum Disease of sebaceous glands