...之为史学文本的话语维度成为史学理论的中心话题，在此，语言从长期以来我们习焉不察的透明物（something to be looked through）转变为被注视的焦点（something to be looked at）。
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透明物，例如玻璃，空气和水，能使光穿透。
Transparent objects, such as glass, air and water, allow light to pass through.
这种装置放在水瓶上，用来检测瓶子内部的透明物，一旦光线被杂质阻挡了，它就会闪烁。
The device is attached to a water bottle, and it monitors the clarity inside the bottle, blinking when the light is obstructed by particles.
介绍了实时全息术检测透明物的一种新方法，它采用物光再现的参考光和参考光通过全息图的直透光所形成的干涉图纹检测透明物体的变化。
A real time holographic testing method of transparent objects by using the interference pattern formed by the reconstruction of the reference wave and the original reference wave is introduced.
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