为什么焦炉导烟车大多采用n+2 n-1呢？与生产工艺有关？请详细解释或推荐书籍，谢谢
请翻译高手帮忙翻译一下~ AbstractTamping machine used in the new line railway line construction，overhaul the old-line screen and operation of line maintenance operations，on track to allocate Road，copied from Ping Road，carbide tamping and ballast carbide consolidate the operations so that the orbit Direction，and around about the level of both high and low lines to the design standards or rules of the maintenance requirements，improve the density of carbide bed，increasing the stability of the track and ensure safe operation of trains.Tamping machine maintenance of railway construction has become an important and indispensable engineering equipment.But in the practical application of tamping machine also has some problems，such as energy consumption，low efficiency，temperature rise，in particular the problem of high temperature or a direct impact on the tamping machine of the normal work of the hydraulic system.The design is specific to tamping machine over the issue of its hydraulic system to improve the 。
求高手帮忙翻译（汉译英） 08-32 tamping machine hydraulic system designed to improveAbstractTamping machine used in the new line railway line construction，overhaul the old-line screen and operation of line maintenance operations，on track to allocate Road，copied from Ping Road，carbide tamping and ballast carbide consolidate the operations so that the orbit Direction，and around about the level of both high and low lines to the design standards or rules of the maintenance requirements and improve，the density of carbide bed，increasing the stability of the track and ensure safe operation of trains.Tamping machine can be separate from the operating level，copy or tamper operations，but in order to improve the quality of work，generally are allocated Road，copied from Ping Road，tamping operations at the same time operations，integrated operations.Now the production tamping machine in the world famous Pula Sai companies in Austria and Seoul，according to Tao Company(PLASSER&THEURER)，the Swiss company Ma Disha。
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