单词：hardening aluminum alloy
单词：hardening aluminum alloy 相关文章
material scientists admire spider silk for being lightweight and strong.now another arthropod product is getting into the act insect cuticle,the tough flexible material is inside insect skeleton.researchers at harvard * institute for biological inspi
Scientific American(十二)月
China is working on next-generation bullet trains with a maximum operational speed of 400 km per hour that will be ready by 2020 for markets linked to the Belt and Road Initiative, the country's top railway vehicle maker said. 国内最大的轨道客车
英语新闻
alienate v. 使疏远 allegory n. 寓言；讽喻 alleviate v. 使减轻 alliance n. 联盟，同盟 allocate v. 分配；定位置 alloy n./v. 合金，融合 allude v. 提及；暗指 allure v./n. 引诱
英文语法词汇
美国航空航天局科学家测试新型飞机 The U.S Aeronautics and Space Administration, NASA, is commonly associated with space exploration, but aeronautics is still a big part of the agencys research. Engineers at its Aeronautics Research Cen
英语新闻
LONDON, July 26 (Xinhua) -- It landed at Lands End on the extreme south-west coast of England 69 days ago and after making its way around the British Isles, the Olympic Torch finally reaches the Olympic stadium on Friday. When it reaches the end of i
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