Sudden accident  突发事故; 突发性事故

Chemical accident  化学事故; 化工事故

chemical chemical  化学性状

emergent chemical accident  突发性化学事故

entanglement sudden death and sudden birth  纠缠突然死亡与突然产生

sudden enlargement and sudden drop  突扩突跌

sudden heating and sudden cooling  激冷激热

catalytic chemical vapor chemical  催化化学气相沉积法

chemical and chemical engineering  化学化工

Chemical Fertilizer Plant of Jianfeng Chemical Industry Comples  沙嘴; 建峰化工总厂化肥厂

chemical industry and chemical fiber pipeline  化工化纤工艺管道

chemical name of new chemical substance  新化学物质化学名称

Geological Institute for Chemical minerals of China Chemical Geological Bureau  中化矿山地质总局地质研究院

Geological lnstitute for Chemical Minerals unere Ministry of Chemical Industry  化学工业部化学矿产地质研究院

Institute of Chemical Mineral Resources and Geology of the former Ministry of Chemical Industry  原化学工业部化学矿产地质研究院

Physical Testing and Chemical Analysis Part B:Chemical Analysis  理化检验-化学分册

speciality chemical specialty chemical  填充喷雾塔

chemical drying agent (= chemical drier  化学干燥剂

chemical drier (= chemical desiccant  化学干燥剂