ballcock 的英语意思
ballcockballcock /ˈbɔːlkɒk $ ˈbɒːlkɑːk/ noun [countable] 
查看全部语言翻译 a hollow floating ball on a stick that opens and closes a hole to allow water to flow into a container, for example in a toilet浮球阀，由一根杆上的空心浮球构成，通过开关孔洞控制水流注入容器（如马桶水箱）
查看全部语言翻译 a hollow floating ball on a stick that opens and closes a hole to allow water to flow into a container, for example in a toilet浮球阀，由一根杆上的空心浮球构成，通过开关孔洞控制水流注入容器（如马桶水箱）