At the National Civil Aviation Working Conference held in Beijing on the 20th, Li Jun, deputy director of the Civil Aviation Administration of China, disclosed that from January to November this year, the impact of high-speed rail on the total civil aviation traffic volume reached 0.3%, an
The protein analyzer is named after its functional properties and is an instrument for professional measurement of sample proteins. In fact, it also has a name that everyone is more familiar with, that is, the nitrogen analyzer. In general, the determination of a sample protein by a prot
Dong Jianping, deputy secretary-general of the China Association of Automobile Manufacturers, appealed at the 2008 China Auto Parts Industry Conference held recently that vehicle companies must combine their own circumstances to learn from the experiences of foreign models, strengthen commun
Jiangling Motors intends to start the JX4D30 engine project. In the downturn of the industry, the company has continuously increased its investment in engine parts and other key components, fully embodying its consistent pursuit of integration of the industrial chain. Jiangling Motors annou
Seed test is an important work in the crop variety experiment. The most important part of the work is to observe and record the traits that can be expressed or fixed after the plants are fully matured. For cereal crops such as rice, wheat, corn, etc. , mainly refers to the investigation
A Basic principle NaF leaching method The reaction is: CaW0 4 (s)+2NaF(aq)CaF 2 (s)+Na 2 W0 4 (aq) At 225 ° C, the concentration equilibrium constant is 24.5. Using F - tungsten leaching rate than white with CO 3 2-, PO 4 3- and other large (see below). At less than 100 ° C, a CaF 2 fil
Lifting iron and reducing silicon is an important research content of China's mineral processing industry. Flotation columns have been widely used abroad to purify iron concentrates, while China is still the dominant flotation machine, and research on the anti-flotation of iron concentrate flot
Electric double eccentric butterfly valve cut off and throttling effect in the pipeline, electric double eccentric butterfly valve opening and closing pieces is a disc-shaped disc, rotating around its own axis in the valve body, so as to achieve opening and closing or regulating the flow through t
On March 1-4, 2017, the 8th International Rechargeable Battery Exhibition was held at the Big Sight International Exhibition Center in Japan, and an expert seminar was held in the same period. At the seminar, a research institute published a market forecast analysis report for lithium-ion batteries
On May 26, 2017, Fangyuan Group ushered in the establishment of the twenty-fourth anniversary and the forty-seventh anniversary of the establishment of the factory. On this day, the Fangyuan Group grandly held a new product launch conference for the establishment of the forty-seventh anniversary of