A new method with a pre existent slit for making rainbow holograms is presented.

提出一种新的“预置狭缝法”制作彩虹全息图。

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The view Angle of rainbow holograms which are recorded using a pre existent slit or a pre existent slit with mirrors is analyzed in detail.

对用预置狭缝法和带平面反射镜的预置狭缝法制作的彩虹全息图的视角问题作了详细的讨论。

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Schemata theory studies how to interpret a text by taking advantage of the reader's pre-existent knowledge.

图式理论主要研究读者如何运用“先存知识”来进行文本解读。

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To change or shift or accept feedback, there has to be a pre-existent condition of rapport between two people.

FORBES: Do You Rule With Claws and Teeth? Try Leading With Engagement Instead

Despite these impressive gains in primary and secondary education, most Bahraini children, particularly those from poor families, still have limited access to comprehensive and quality early childhood education (ECE) due to: poverty and limited State investment in or support of ECE programmes (in fact, comprehensive early education programmes are non-existent in the country) and the fact that child participation in pre-school classes is largely seen as a luxury.

UNESCO: The Mother-Child Home Education Programme (MOCEP)