Abstract: In this paper, the maximum amount of straight stroke control valve is used. Most manufacturers are analyzing the technical details of the soft sealing structure design of single seat control valve.

1. Introduction The control valve (also called the control valve) is the termi…

In the "China's Measures Affecting the Import of Auto Parts," China ended in losing the lawsuit. The case tells us that even when formulating domestic policies, legislators need to follow the laws of market economy and consider international rules.

In early 2005…

First, the pump in the ship's application In a variety of ships, in order to ensure its sailing performance and performance, require a large number of, in order to meet a variety of different needs of mechanical equipment and electrical equipment. In the ship machinery and equipment, the pu…

In 2011, it was a year in which the sanitation vehicle industry achieved a leapfrog development. This year, the spring breeze of policy made the sanitation vehicle a non-mainstream item in government procurement and suddenly became a popular word in government vehicle procurement. Co…

Abstract: The fault diagnosis method of hydraulic pump bearing based on integrated BP network is studied. Using the frequency domain and the inverse frequency domain for feature extraction, an integrated BP network is adopted to diagnose and identify the fault, which solves the problems of …

In 2011, China's pesticide market had a strong demand for fungicides. In particular, the production, import volume and export volume of fungicides increased by more than 20%, showing strong growth momentum. Bactericide has become the biggest highlight of the entire pesticide market. …

Since the beginning of this year, the domestic production, import, and price of potash have increased at different levels, and the demand for potash has declined slightly due to factors such as price. The industry believes that the development of the industry throughout the year tends to b…