The method to observe the precipitated calcium carbonate crystal with optical microscope is simple and direct.
介绍使用光学显微镜观察轻质碳酸钙晶体的方法.
All of these cases received a simple cauterization of the ear drum under the microscope.
所有病例均在显微镜下接受简单的鼓膜烧穿.
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