During recessions, the private sector retrenches and the government deficit widens. 在衰退期间,私人部门节省开支,政府赤字扩大。
Light hydrocarbon is sensitive to water washing, it retrenches the fastest under water washing. Using the ratio between benzene, toluene and their same carbon number alkane can discriminate water flooding degree of reservoir. 轻烃组分对水洗敏感,在水洗作用下减小最快,使用苯、甲苯及其同碳数烷烃之间的比值,可以用来判别油层水淹程度;