1.The characteristics of wulfenite and latest development of wulfenite extractive metallurgy were reviewed.
1.介绍了彩钼铅矿的特点及其浸出工艺的研究现状。
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13.That faster spread of Eurasian agriculture, compared with that of Native American and sub-Saharan African agriculture, played a role (as the next part of this book will show) in the more rapid diffusion of Eurasian writing, metallurgy, technology, and empires.
与美洲原住民和撒哈拉以南非洲农业相比,欧亚农业的传播速度更快,这在欧亚文字、冶金、技术和帝国的更快传播发挥了作用(正如本书的下一部分将展示的那样)。机翻