可由色度坐标或结合其主要(或补充)波长和相应的激发纯度来定义的色刺激值。
Color quality of a color stimulus definable by its chromaticity coordinates, or by its dominant (or complementary) wavelength and its excitation purity taken together.
这项计划就是利用激光的纯度选择性地激发铀的罕见形态。
The plan was to exploit the extraordinary purity of laser light to selectively excite uranium's rare form.
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