China's services import and export value amounted to a record-high of 7.5 trillion yuan (about 1.05 trillion U.S. dollars) in ...

摘要泡利是量子论、量子力学和量子场论的构造主角之一。不相容原理、矩阵力学解氢原子问题、泡利方程、自旋—统计定理以及预言中微子等是人们熟知的泡利的几项成就。此外，就对物理学的理解与阐释能力而言，泡利也是罕有其匹的。关注泡利的成长过程有助于我们理解什么是 ...

The existence of the Hsia, traditionally regarded as the first of China’s three great founding dynasties and one of the chief progenitors of Chinese civilization, has not only long been questioned but ...

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在自然界中，雄性为了繁衍后代，不仅需要与其他雄性竞争交配机会，甚至在成功交配后，精子也必须与其他雄性的精子在雌性的生殖道内展开激烈的竞争。精子竞争（sperm ...