English translation for "国家二级环境空气标准"

national secondary ambient air quality standard

Similar Words：

"国家儿童和家庭研究所" English translation, "国家儿童书籍出版社" English translation, "国家儿童协调委员会" English translation, "国家儿童协定" English translation, "国家二级" English translation, "国家二级环境空气技师标准" English translation, "国家二级理财规划师" English translation, "国家二级企业" English translation, "国家发改委" English translation, "国家发明奖" English translation