direct current generator

Using the relation between a matroid and its erections,especially the relation dealing with a special map f,this paper makes a concrete analysis of the concrete conditions for the erection of Vámos matroid.

通过利用一个拟阵与它的直立之间的关系,特别是通过处理一个拟阵与一个特殊映射f之间的关系,具体分析了Vámos拟阵的直立问题,得到了除去平凡情形,Vámos拟阵没有直立的结论。

The composition of town gas and properties given;analyzed was the new process for co-production of 50kt/a methane from excess town gas at the coal gas plant of Datong Coal Mines Group;by vertical retort and two-stage furnace for water-gas,coal gas produced,from which qualified methane can be produced by subsequent compression,conversion,de-carbonization,syntheses and distillation.

介绍了城市煤气的组分和性质;分析了大同煤矿集团煤气厂利用富余的城市煤气联产5万t/a甲醇新工艺的流程,由直立炉和水煤气两段炉生产的煤气经过压缩、变换、脱碳、精脱硫、合成、精馏作业后,可制得精甲醇;在设计、施工、投料过程中,该厂精心组织,严格把关,保证了一次开机成功。

The paper reports that based on one dimention space heat conduction theory of infinite flat plate, the mathematic model on heat transfer of vertical retort is established.

采用无限大平板一维空间导热理论 ,建立起直立炉传热数学模型。