Centrifugal pump this grinding leprechaun, at the start, need to pay attention to a lot of matters, do not close the outlet valve when the centrifugal pump starts? Shock! The answer turned out to be... 1 Why do you have to close the outlet valve when starting the centrifugal pump? When the centr
From March 12 to 15, the China New Era Certification Center conducted an on-site review of the annual supervision of the equipment contractor qualification for Dongfeng Motor Group Co., Ltd. After careful examination, the review team announced that Dongfeng Motor Group Co., Ltd. passed the on-site
The overall size of China's machine-side crusher manufacturing industry has entered the ranks of international production powers, but the overall competition and development stamina still cannot compete with the developed countries. At present, the basic components and parts for domestic users
According to the data released by the European Association of Automobile Manufacturers (ACEA), in the fourth quarter of 2017, the demand for new energy vehicles in the European Union continued to grow, with a year-on-year increase of 35.1%, with a total of 227,378 units sold. The proportion of 6.7
The construction of the iris and the unified foreign service is the two major focuses of the construction of the Iris Unified Service Platform. The goal is to provide uniform entrance and exit of iris identity verification for public security organs at all levels. The iris data acquired by the fro
The geological plant method is a method for prospecting based on the relationship between specific plant species and plant combinations and certain geological conditions (rock, wall rock alteration, structure, specific deposits, etc.). Since two-thirds of the earth's land is suitable for plant
In 2017, there was a vigorous construction movement in China. Regardless of whether it is a newly-built automobile manufacturer, a traditional car company or BAT, it is deploying new energy vehicles (mainly electric vehicles) and automatic driving technology. Frequent rush to finance large-scale