同义词
1)level regulator,liquor-level regulator,liquid level control,level controller,液面调节器2)liquid-level controller,（柱中）液面调节器3)ball float level controller,浮球液面调节器4)high-low level control,双位液面调节器5)float level controller,浮动式液面调节器6)float level controller,浮子式液面调节器
