A new method of observing hologram by changing the beam path in laser hologram is introduced.
本文介绍了激光全息照相中，改变光路图实现了观察全息图的新方法。
The article proposes the experimental method of observing the spatial structure of plants leaf trace and leaf crack.
通过实验研究提出了观察植物叶迹、叶隙立体结构的方法。
Objective: This study is designed to find an effective method of observing the morphology of meiotic spindle and chromosome in mature oocytes, taking the mouse as a model.
前言：目的以小鼠为研究模型，探索观察成熟卵母细胞纺缍体和染色体的方法。
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