... secondary refraction 续至折射 secondary replacement 次生交代 secondary reserves 二次可采储量 ...
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secondary refraction survey 续至波折射法
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The theory and method of measuring the refraction index of transp are nt glass-plate with secondary imagery method are introduced.
介绍了用二次成像法测定透明玻璃板折射率的原理和方法。
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