Read Edit View history 顶阀 dǐngfá top valve Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 顶阀/頂閥 · dǐngfá · top valve 2026/03/04 顶阀 / 頂閥 dǐngfá top valve a valve located at the top or head of a mechanical system, such as an engine cylinder head 这个气缸的顶阀需要定期清洗。 created sense Mar 4, 2026, 02:25 AM