基本解释摩擦牢度同根派生 crockfastness相关词英汉例句Improves the crockfastness of the leather dye 改善皮革染料的上色牢度crockfastness更多例句词组短语短语crock fastness value 耐摩色牢度值crockfastness更多词组专业释义机械工程摩擦牢度