基本解释[土木建筑工程]空气洁净度等级英汉例句双语例句We have the first Class-1000 air cleanliness workshop in China, and parts of its environment can reach Class 100.我集团公司拥有国内首家1000级无尘车间，其局部生产环境可达到100级。专业释义土木建筑工程空气洁净度等级