光学理论和光学玻璃的问题已经得到解决，但要得到最佳的成像效果还有一个需要解决的问题。那就是显微镜的照明。
The scientific theory is there, and so are proper glasses. But there is yet another factor to be mastered before best results can be achieved in microscopy: Illumination.
光学理论和光学玻璃的问题已经得到解决，但要得到最佳的成像效果还有一个需要解决的问题。那就是显微镜的照明。
The scientific theory is there, and so are proper glasses. But there is yet another factor to be mastered before best results can be achieved in microscopy: Illumination.
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