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ＷＹ２２ＬＣ液压挖掘机是我公司研制开发的一种新产品，该机液压系统的主要元件为日本东芝和帝人制机的产品。在做整机性能试验时，测得液压系统的空流阻力为 ３．０１ ＭＰａ，超出了《液压挖掘机技术条件》（ＧＢ／Ｔ９１３９．２—１９９６）中对合格液压挖掘机液压系统的
The WY22LC hydraulic excavator is a new product developed by our company. The main components of the hydraulic system of this machine are products of Toshiba and Teijin. During the performance test of the complete machine, the measured air flow resistance of the hydraulic system was 3.01 MPa, which was beyond the hydraulic system of the qualified hydraulic excavator in the Technical Specifications for Hydraulic Excavators (GB/T9139.2-1996).