Since the outbreak of the new crown pneumonia epidemic, the National Society has actively responded to the call of the China Association for Science and Technology, given full play to its organizational and expert advantages, and united and led the majority of scientific and technological workers to actively participate in the people's war of epidemic prevention and control

Today, many industries are embracing weight loss as an innovation driver. These include automotive technology, aerospace technology and medical technology. Ultrasonic cutting is a growing number of materials used in lightweight construction...