directorate of standards是什么意思 directorate of standards在线中文翻译

directorate of standards是什么意思，directorate of standards在线翻译，directorate of standards中文意思，directorate of standards的中文翻译，directorate of standards发音，directorate of standards例句，directorate of standards词组短语，directorate of standards怎么翻译，单词directorate of standards的意思