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。
At the end of the study, the rats were killed, ACE activity in serum and lung homogenate was assayed, and the alveolar-capillary membrane was observed by transmission electron microscope.
实验末分别测定血清和肺组织匀浆的血管紧张素转换酶(ace)活性，并以透射电镜观察肺泡毛细血管膜的变化。
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