Mainly engaged in road construction machinery and highway maintenance of the technical development, production and sales.
主要从事筑路机械和公路养护机的技术开发、生产和销售。
The proper use of the construction machinery in its selection, replacement and maintenance for hydraulic oil directly influences the working reliability of hydraulic system and the operating life.
工程机械液压油的选用、更换与维护正确与否直接影响液压系统的工作可靠性和主机的使用寿命。
The book is "Building construction machinery use and maintenance of books" one.
本书是《建筑施工机械使用与维护丛书》之一。
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