| 释义 |
non-return valve单向活门；单向阀non-return valve单向阀non-return valve止回阀non-return valve逆止阀双向☞ non-return valve-- check valve--back pressure valvenon-return valve逆止閥藥學non-return valve止回閥電子工程non-return valve單向活門；單向閥電機工程non-return valve止回閥海洋科學名詞—造船工程non-return valve止 |