A2.2某些物理量的量纲一的组合,例如在描写传输现象中出现的那种,称为特征数(characteristic numbers),并在名称中带有数(number)这一字。
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The structure formulas of PAH are tabled in accordance with the characteristic Numbers proposed by one of the present authors.
PAH的结构式皆以作者之一所提出的特征数表征。
They have the same number of protons in their nuclei (this is the defining characteristic of an element), but different Numbers of neutrons.
在它们的原子核中质子数是相同的(这是一个元素定义性的特征),但是中子的数量不同。
Large Numbers of bamboo are applied in Chinese garden for their unique aesthetic value and nature characteristic.
竹子因其特殊的审美价值和自然特性,大量的被应用于中国园林。
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