?止回瓣
止回瓣 nonreturn flap 止回阀 [工业] check valve; check-valve mounting bracket; one-way valve; clack valve; clappet (valve); inverted valve;...
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。