单词	凹形垫
释义	凹形垫 thumb pad
随便看	sewage disposal pump sewage disposal pumping station sewage disposal reactor sewage disposals sewage disposal structure sewage disposal system sewage disposal systems sewage disposal technology sewage disposal unit sewage disposal vessel sewage disposalwaste water disposal sewage disposal work sewage disposal works sewage disposer sewage disposes sewage disposing sewage disposition sewage distribution sewage drainage standard sewage draining exit sewage draining outlet sewage draining passage sewage effiuent sewage experiment sewage expert planning