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七年级生物上册2.1.1《练习使用显微镜》课件（新版）新人教版.ppt

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第一节 练习使用显微镜,你已经知道生物体是由细胞构成的，但你能说出细胞有哪些细微的结构吗？对微小的物体和细胞进行观察，应当借助显微镜。,显微镜下的草履虫,果蝇的头部,细菌,learning content,学习内容,粗准焦螺旋,细准焦螺旋,镜臂,压片夹,载物台,镜柱,目镜,镜筒,转换器,物镜,通光孔,反光镜,镜座,遮光器,认识显微镜,目镜,物镜,显微镜放大倍数=_ X _,物镜倍数 目镜倍数,练习使用显微镜,使用显微镜的规范操作方法是什么呢？,

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