通过对两省一局生产后劲的调查,我们认为,由于“七五”期间受各种因素的影响和多方面条件限制,目前煤炭企业普遍程度不同地存在着生 Through the investigation of the stamina in the production of the two provinces and one bureau, we think that due to the influence of various factors during the “Seventh Five-year Plan” period and the various conditions and constraints, there are different degrees of prevalence among the coal enterprises at present