x ray level是什么意思

用法例句

Experimental Study of the characteristics of NOX Emission on Half Mix Flat-flame Partially Premixed Combustion;

平焰半预混燃烧NO_X排放特征的试验研究

Advance Research on NOX Removal in Liquid-Phase in Ferrous-Chelat;

亚铁螯合剂液相脱除NO_X的研究进展

Impact of Aircraft NOx Emission on NOx and Ozone over China;

飞机排放的NO_x对中国地区NO_x和臭氧的影响(英)

Research on NO_x emission of coal-fired boilers in Shandong Province of China;

中国山东电网燃煤锅炉NO_x排放状况和治理技术试验研究

NO_x and N_2O emission characteristics during co-combustion of municipal sewage sludge and coal;

城市污泥与煤混烧过程中NO_x和N_2O的排放特性

RESEARCH ON REDUCING NO_x CONTENT IN HIGH TEMPERATURE CERAMIC KILN BY GAS MEMBRANE SEPARATION PROCESS;

采用气体膜分离技术降低高温陶瓷窑炉内NO_x的研究