Copper-aluminum composite pipe technology has great potential for saving electricity
Changzhou National High-tech Zone recently released a message that a new type of high-efficiency heat exchange tube-copper-aluminum composite tube technology developed by a company in this area was fully affirmed by an important expert group. If the national air conditioner manufacturer is fully adopted, it can be used annually. More than 2 billion kilowatt hours of energy saving. According to reports, the technology can be applied to air-conditioning and refrigeration industries, and is also of great value in energy development (thermal power, nuclear power), petrochemicals, electronics, cables, building waterway management, and environmental protection.
The cover glass is covered on the material on the glass slide, which can avoid the contact between the liquid and the objective lens, so as not to contaminate the lens, and can make the top of the observed cells in the same plane, that is, the distance from the objective lens is the same, so that the observed Images are clearer.Why do you need a coverslip when using a microscope
The purpose of staining the specimen with iodine solution is to make the cells more obvious under the microscope, and it can also kill the cells and prevent the cells from migrating.
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2. Make the specimen relatively fixed;
3. It is convenient to use the capillary phenomenon to form a gradient when adding various reagents (staining agent, acid, salt solution);
4. Avoid contamination of the specimen.
