At present, the milling six-way generally uses the universal indexing head indexing and uses the following three methods: one is to machine on a horizontal milling machine with two three-face milling cutters (Fig. 1), and the second is to process on a vertical milling machine. (Fig. 2), the third method is to disengage the indexing head worm gear and add a hanging wheel (shown in Figure 2, dashed line), which is more troublesome. To this end, we have improved the indexing mechanism by using the old indexing head spindle and base.
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.
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
1. Make the object to be observed form a thin film, which is easy to transmit light and easy to observe;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.
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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