短語詞組短語Butterfly swing check valve 蝶式止回閥;蝶式;止回閥;船用截止閥閥butterfly sing check valve 蝶式止回閥hydraulic butterfly check valve 液控止回蝶閥Solw closure butterfly check valve 蝶形緩閉止回閥hydraulic check butterfly valve 液控止回蝶閥hydraulic control check butterfly valve 液控止回蝶閥 返回 butterfly check valve