亚洲人成在线播放_亚洲爆乳精品无码一区二区三区_中文自拍欧美少妇_国产精品无圣光欧美_日本在线免费观看_中文字幕第38页永久乱码_动漫人物扑克牌网站_99欧美猛男的大粗鳮巴_国产护士一级毛片_极品少妇XXX护士

I would like to introduce the biological microscope to you in detail

As its name implies, biomicroscope is a kind of fine optical instrument used to investigate biological sections, biological cells, bacteria, living tissue culture, fluid deposition, etc., and also to investigate other bright or semi bright objects, powder, fine particles and other objects. It is widely used in cytology, parasitology, oncology, industrial microbiology, botany and other fields. The biomicroscope is also used by medical and health institutions, colleges and universities, and research institutes for the investigation of microorganisms, cells, etc., and for the continuous investigation of the process of multiplication and division of cells, bacteria, etc. in the culture medium.

It is widely used in cytology, parasitology, oncology, immunology, genetic engineering, industrial microbiology, botany and other fields. Its optical technical parameters include: numerical aperture, resolution, magnification, depth of focus, field of view width, masking difference, working distance, etc. These parameters are not always the higher the better. They are not only connected but also limited to each other. In practice, the relationship between parameters should be coordinated according to the objective and practice of microscopic examination on the basis of ensuring the resolution.

According to the positioning level. It can be divided into student level, experimental level and research level biological microscope. According to the number of eyepieces. It can be divided into monocular, binocular and tricular biological microscopes. Classification according to the number of eyepieces classification according to the number of eyepieces classification according to the relative orientation of the eyepiece and the mobile station. It can be divided into an upright biomicroscope and an inverted biomicroscope.

The objective lens of an upright (conventional) biological microscope is above the mobile station, and the objective lens of an inverted biological microscope is below the mobile station. Classified according to imaging principle. It can be divided into optical biological microscope and electronic biological microscope. The optical microscope is mainly composed of an eyepiece, an objective lens, a stage and a reflector (light collecting lens).