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单词 magnitudes
例句 DEFINITIVE EXAMPLES 权威例句〔UBV photometry〕Photometry used to obtain stellar magnitudes by comparing observed magnitudes to a standard sequence of stars.紫外蓝光视觉测光法:把观察到的星星的光度和恒星的一个标准顺序相比较,用来获得星光亮度的测光法美国传统〔magnitude〕The star varies in brightness by about three magnitudes.星体的亮度大约分三个星等。牛津高阶〔unit〕A precisely specified quantity in terms of which the magnitudes of other quantities of the same kind can be stated.单位:精确规定的量,同类的其他量的大小能用它来叙述美国传统
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