The refractive index was obtained through measuring the focal position of a capillary filled with the liquid by a reading microscope, and doing a calculation with an analytic formula.
该方法基于共轴球面光学系统的成像原理，通过读数显微镜对吸入待测液体后毛细管的焦点位置进行单一参数的测量，进而计算出待测液体的折射率。
The capillary density was counted under 200 magnified visual field with ordinary microscope.
普通光学显微镜200倍视野下计数毛细血管数量。
Capillary net on the facial nerve were protected from damaging on the experiment side when excising parotid glands and anatomying facial nerve by surgical microscope.
实验侧手术显微镜下游离面神经切除腮腺，保护神经外血管系。
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