船闸泄水系统
/ˈlɒk ˈɛmptiɪŋ ˈsɪstəm/
n
English: lock emptying system · 船闸泄水系统
English · lock emptying systemEspañol · sistema de esclusas de vaciado y desagüeFrançais · aqueduc de vidange
释义：Conduit that evacuates the water from the downstream side causing the water level in the lock-chamber to go down.