English translation for "三级空气污染防制区"

class Ⅲ control regions

Similar Words：

"三级警司" English translation, "三级静止状态" English translation, "三级开关" English translation, "三级抗原抗体相互作用" English translation, "三级颗粒" English translation, "三级空气压缩机" English translation, "三级控制器的准连续动作" English translation, "三级扩孔钻" English translation, "三级雷场调查" English translation, "三级历史建筑" English translation