secondary hydration  二次水化

Secondary hydrodesulfurization  二段加氢脱硫

Secondary Hydrogenation  二段加氢; 加氢二次反应

Degree of substitution of secondary hydroxyl  仲羟基取代度

hydrocarbon secondary migration  二次运移

Secondary hydrocarbon accumulation  二次成藏

Secondary Hydrocarbon Generation  二次生烃

SECONDARY HYDROCARBON MIGRATION  油气二次运移

secondary hydrocarbon pro-duction  二次生烃

Secondary Hydrocarbon-generation  二次生烃

secondary migration of hydrocarbon  油气二次运移

The secondary hydrocarbon migration  石油二次运移

minimum depth limit of secondary hydrocarbon generation  二次生烃深度上限

secondary-secondary glycol  二级邻二醇

council secondary school {country secondary school}  地方公立中等学校

secondary seta secondary hair  后生刚毛

secondary technical school; technical secondary school  中等技术学校

acid hydrolyzation method and enzyme hydrolyzation method  酶水解法和酸水解法; 碳纤维混凝土

3D simulation of primary and secondary equipment  一、二次设备三维仿真

3-phase secondary rectification  三相次级整流