国产a毛片一级视频_国产制服在线一级毛片卡_在线欧美日韩精品一区二区_免费国产a国产片高清女厕所_无码爱爱视频免费_九九热精品在线观看_精品不卡一区二区_边做饭边被躁我和邻居日本_伊人久久综合无码成人网_一级毛片在线播放

With the rapid development of our country's economy and the increase in research laboratories, there is a common concern for all researchers? How to quickly and efficiently clean has become a common concern for everyone? Because every experiment requires countless experimental verifications, it results in countless stains remaining on the inner walls of glass beakers, reagent tubes, and other glassware due to high-frequency use. At this point, a lot of people are needed to clean the vessels. Initially, in China's scientific research institutions, most of the cleaning work was done manually. In the 1990s, China gradually introduced advanced foreign technology, commonly known as ultrasonic cleaning, which uses water as a medium and high-frequency vibration to cause water molecules to explode between them, like a pulse jet, quickly peeling off the stains on the surface of the object without affecting the material of the object itself. Therefore, this process is called the "cavitation effect". It is also one of the globally recognized green cleaning solutions for environmental protection.