WASHINGTON, March 19 (Xinhua) -- The White House said U.S. President Donald Trump and his Ukrainian counterpart Volodymyr Zelensky in a phone call on Wednesday agreed to "a partial ceasefire against ...
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圆周率的前 k 位数字，是否一定存在前 n 个素数乘积的前缀恰好匹配 ...注意到： \begin{align} \prod_{i=1}^{3} p_i &\approx \color{red}{3}.000000000000000 \times 10^{1}\\[.2cm] \prod_{i=1}^{30} p_i &\approx \color{red}{3.}161005464041760 \times 10^{46} ...
Ceasefire talks on Russia-Ukraine conflicts are scheduled for Sunday in the Saudi Arabian city of Jeddah, a US envoy said Tuesday.
3月18日，美国总统特朗普和俄罗斯总统普京进行了一次长时间（预计超过两小时）通话。乌克兰问题是核心议题，但讨论范围涵盖多个领域。这次通话紧随美乌会议之后，会议上泽连斯基总统同意实施为期30天的停火。以下是对白宫声明的逐句分析，并结合了俄方声明的相关信 ...
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工作没几年，大学那些深奥难懂的知识，99.9%都还给了老师，当年 ...大学里学的知识还真是简单。如统计力学，大学里只需要求配分函数，就啥都有了。 一般理想气体的哈密顿量就是： \hat{H} = \sum_{n=1}^{N} \hat{h}_n = \sum_{n=1}^{N} h_n \hat{a}^{\dag}_n ...
When it comes to robotics globally, China is the focus. In January and February this year, China's industrial robot ...
It is not immediately clear the response of Ukraine to the limited and phrased ceasefire plan. Kiev has said it is ready to accept the 30-day truce proposed by Trump. Ahead of the phone talk, Trump ...
Ukrainian President Volodymyr Zelensky said he will hold phone talks with US President Donald Trump on Wednesday, the ...
A total of 59 young footballers from seven provinces, autonomous regions and municipalities across China, including Chongqing, Sichuan, and Xinjiang, have been participating in the 2025 Chinese ...
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蜜雪冰城的创立与拼多多的诞生有着相似的逻辑，以性价比满足未被满足的需求，实现消费平权的普惠性，一个是让县城消费者喝上现制茶饮，一个则是让安徽安庆人有厨房纸可用、有新鲜水果吃。
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