active ingredient
active ingredient
[农学英汉词典]
active ingredient有效成分
是什么意思，active ingredient的解释，active ingredient的翻译
[新英汉石油技术词典] active ingredient
[专利英汉词典] active ingredient
[昆虫学英汉词典] active ingredient
[环境英汉词典] active ingredient
[石油英汉词典] active ingredient
[经贸英汉词典] active ingredient