多年来,国营大中型企业受旧体制所累较重,使得它们在企业机制的转换上遇到不少困难。与乡镇企业、三资企业相比,企业机制的主要差异表现在: Over the years, state-owned large and medium-sized enterprises have been weighed more heavily by the old system, which has caused them to encounter many difficulties in the conversion of enterprise mechanisms. Compared with township and township enterprises and foreign-funded enterprises, the main differences in the enterprise mechanism are as follows: