The microstructure of the sample glaze layer under polarizing microscope and reflecting microscope has showed acicular hausmannite crystals on the glaze layer sur...
通过偏镜和反
镜观察试样
层
结构,发现虹
成
过程中
层表面析出了针状
黑锰矿晶体。
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A Dutchman named Comeille de Pauw announced in a popular work called Recherches Philosophiques sur les Americains that native American males were not only reproductively unimposing, but so lacking in virility that they had milk in their breasts.
有个叫科梅耶·波夫的荷兰人在
叫《关于美洲人的哲学研究》的通俗作品中宣称,美洲的土著男人不但在繁殖方面给人印象不深,而且“如此缺乏生殖能力,他们的乳房都流着奶汁”。