based on multiple arrangement of bent tubing, this system maximizes the use of heat energy from exhaust gases 热交换系统以多重多管排列的曲管为基础,实现了排气热能的彻底利用。
they are the second bases of the diversity of the form of the public-owned system of our country . afterwards, the author brings in the-basic viewpoints on the form of the socialist public-owned system . as far as the objective bases are concerned, the level of the productivity of current stage of our country is the first one, whose low level, multiple arrangements and imbalance make a decision that the level of the " socialization " of the public-owned system should not be too high and the form of the public-owned system has various forms instead of a kind of form 我国分权型公有制形式,包括“双层经营体制”型的农村集体经济和“放权让利”型、“制度创新”型国有企业,从总体上看,它们分别是在保持原有的集体所有制、国家所有制不变的前提下,通过调整集体与农户、国家与企业之间的权利关系而形成的,它们虽然对农村集体经济和国有经济的发展起到一定的推动作用,但是其局限性也是相当明显的,因此,必须进行进一步的改革。