A certain type of aircraft has a special position in the third-generation fighters in active service. Western countries are stunned by it, thinking that it is superior to the US main fighter F-15, and the light fighters F-16, Mirage 2000, etc. are difficult to Competing. The aircraft is equipped wit-----
With the gradual strengthening of people’s safety awareness, public transportation safety has become a matter of great concern to the general public. Urban public transport, as an important part of urban transport, is the preferred means of transportation for low-carbon, green, and green tra-----
/*kangxianyue 250*250 was created on 2017/3/29*/ var cpro_id = "u2939694"; No matter who is under the control of the mobile phone industry in the human world, the materials used are quite colorful. Although in general, there are three major categories of glass, meta-----
With the advancement of science and technology, we need to carry out a thorough drainage design in order to eliminate roof rain quickly. Then what is the relationship between roof drainage? If you do roof drainage ? Let's take a look at it together. Factors affecting roof slope 1, the relati-----
The explosion-proof performance of FAG explosion-proof exhaust fan is made according to the provisions of GB3836.1-8 "general requirements for explosion-proof electrical equipment for explosive atmosphere" and GB3836.2-83 "explosion-proof electrical equipment explosion-proof electric-----
In 2016, the Central Economic Work Conference determined the “de-capacity, de-leverage†barrier, and many steel companies received subsidies from local governments. On December 25, the listed company Linggang announced that it received a financial subsidy of 790 million yuan from Chaoya-----
Researchers at the University of California, Santa Barbara studied the effect of domain size and purity on the efficiency of solar cells by using organic small molecules instead of polymers for the donor layer. Postdoctoral researcher Subhrangsu Mukherjee an-----