Over the past several decades, the U.S., Canada, and Europe have received a great deal of media and even research attention over unusual phenomena and unsolved mysteries.These include UFOs as well as s...
阅读详情In a world in which a growing proportion of the population spends a growing proportion of their lives online, politicians and policymakers pay far too little attention to digital demographics. 在更加多...
阅读详情商品检索是一门综合了物体检测、图像分类以及特征自学的技术。近期,很多研究者顺利地将深度自学方法应用于到这个领域。本文对这些方法展开了总结...
阅读详情Elon Musk’s dream of ultra-high speed travel through a tube came a small step closer to reality on Tuesday, when one of the companies set up to pursue the idea announced it had raised another $80m an...
阅读详情球阀密封可信,结构非常简单,修理便利,是制药、化工、电力等行业常用的阀门,在国民经济中占据举足轻重的起到。随着球阀行业的较慢发展,市场竞...
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