Recently, covid 19 outbreak spreads in Shanghai, China. There are more than 25,000 new asymptomatic domestic infections every day. China is implementing a dynamic zero-out policy. A leading respiratory expert said the key to COVID-19 prevention and c…
Is boron amorphous or crystalline?Boron can be prepared in several crystalline and amorphous forms. The well-known forms of crystallization are α-rhombohedral (α-R), β-rhombohedral (β-R) and β-tetragonal (β-T). In spec…
Nano metals have poor stability due to the introduction of a large number of grain boundaries. Generally speaking, the growth temperature of nanocrystalline grains is much lower than the recrystallization temperature of coarse crystals, and some nano…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
At 4:30 on November 24th, the Chang'e-5 probe was successfully launched. As the final battle in the three-step process of my country's lunar exploration project, the Chang'e-5 lunar exploration mis…
The newly developed multi-layer winding stack flexible electronic film can effectively reduce the 3D space, and at the same time, the filter network can be modularized.…
CEO of Pfizer partner BioNTech says coming winter will be hard but by April, 300 million immunization units should be ready, which will have an impact on the global pandemic.If coronavirus vaccination…
CEO of Pfizer partner BioNTech says coming winter will be hard but by April, 300 million immunization units should be ready, which will have an impact on the global pandemic.If coronavirus vaccination…
0086-0379-64280201
brad@ihpa.net
skype
whatsapp