3. 测角仪衍射圆半径大于等于150mm。 4. 测角仪重现性：0.0001度。 5. 测角仪角度重现性：0.0006度。 泰坤工业X射线衍射仪TK-XRD--201的工作原理介绍 X射线衍射仪TK-XRD--201的使用方法? 泰坤工业TK-XRD--201多少钱一台? X射线衍射仪TK-XRD--201可以检测什么？ X射线衍射仪TK-XRD ...

KNOXVILLE, Tenn. — Jahmai Mashack raced up the court and hit a three-pointer from well beyond the arc at the buzzer to give No. 5 Tennessee a 79-76 victory over No. 6 Alabama on Saturday. The ...

This study reveals tungsten carbide-carbon nanofoam composites as efficient electrocatalysts for hydrogen evolution, ...

Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.

研究导读氢能作为实现碳中和的终极能源，其生产技术一直备受关注。传统碱性电解水制氢虽成本低，但受制于氢氧根离子交换膜（HEM）的传输速率，始终难以突破效率天花板。天津大学周凯歌、姜忠义、武美玲携手中山大学周业成、兰州大学张浩力课题组，以二维BiOI基材 ...

NASHVILLE, Tenn. -- The Alabama fanbase enjoyed an unusual experience on Friday night in Nashville. The Crimson Tide faithful were treated to No. 3 Alabama dominating No. NASHVILLE, Tenn.

Prime Minister al-Sudani hails the killing of Abdallah Makki Muslih al-Rufay’i as a major blow to ISIL remnants in Iraq. Deputy foreign ministers of Russia, China and Iran call for multilateral ...

A “pause” in U.S. aid to Ukraine could signal the end to years of lucrative contracts to Alabama’s defense sector. Earlier this month, President Donald Trump ordered the halt to U.S ...

Officials from US and Israel say governments of Sudan, Somalia and Somaliland have been asked to take in people of Gaza.