He focuses the lens of a microscope. 他调整显微镜的透镜以定焦点。
The growth of optical anistropy of the mesophase was observed continuously under a hot stage optical microscope. 聚合产物在热台偏光显微镜下观察中间相转化行为。
A metallographic microscope is used to observe the micrographs of the porous alumina membrane anodized by first and second steps. 用金相显微镜观察了一次阳极氧化和二次阳极氧化后多孔氧化铝的表面形貌。
