长春市较好的妇科医院
时间:2019年10月21日 19:36:28

Apple’s car is either the worst-kept secret since its watch or a cracker of an inside joke. “Project Titan” has generated massive hype for a product that is five to 10 years off. The iCar may be electric and drive itself or not. Few know. But if it does arrive, it will be stylish, tech savvy, integrate with the iPhone and be in demand. Who will build them? Not Apple: it does not build its phones or computers, and building cars is much more complicated — just ask Tesla.苹果(Apple)汽车要么是继苹果手表之后最没能保守好的秘密,要么是个只有内行人才听得懂的高明笑话。Project Titan使一款5到10年后才有望问世的产品受到大肆炒作。iCar可能是无人驾驶的电动汽车,也可能不是。没几个人知道。但如果这款产品真正推出,它应该是一款时尚、高科技、能和iPhone整合的抢手产品。谁将是这款产品的制造者?不是苹果:苹果的手机、电脑都不是苹果制造的,而制造汽车要复杂得多——问问特斯拉(Tesla)就知道了。An existing carmaker might build it. Plenty of carmakers taught Chinese joint venture partners how to make cars as the price of admission to the growing Chinese market, even at the risk of increasing low-cost competition. The iCar market would be large and lucrative. A big global carmaker might be tempted to help with the build, even if Apple monopolised the branding, customer relationship and profitability. The benefits of scale and the brand halo might encourage them to overlook the risk of cannibalised sales.制造者可能会由一家现有的汽车制造商担当。作为获准进入不断增长的中国市场的代价,许多汽车制造商教中国合资伙伴如何制造汽车,甚至不惜冒着加剧低成本竞争的风险。iCar将拥有巨大而利润丰厚的市场。即使苹果在品牌、客户关系和盈利能力方面独占好处,或许依然会有一家大型全球汽车制造商禁不住诱惑,帮助苹果制造汽车。规模效应和品牌光环带来的好处可能会鼓励它们忽视类似产品上市的风险。More likely that a Chinese carmaker would step in. The manufacturer would be cost efficient for Apple and gain needed scale for itself. And premium-priced Apple cars are unlikely to cannibalise sales of low-priced models for the Chinese market.更有可能的是,会有一家中国汽车制造商参与进来。与这家制造商合作对苹果来说将具有成本效益,制造商自身则能获得所需的规模。定价高端的苹果汽车不大可能影响中国市场上低端车型的销售。Another likely option is Magna Steyr, the world’s largest white-label carmaker. It builds cars in European and Chinese plants to meet overflow demand or specialised, low-volume models for BMW, Mercedes-Benz, Chrysler and Aston Martin. Building cars is a side business for parent company Magna International, but the group has bn in enterprise value, supplies all the big carmakers and has been serious about growth since its founder left in late 2012 (shares are up 166 per cent since). Like the phones, most of the iCar’s profit will be Apple’s, but there is a slice of pie there for the partner.另一个可能的选项是世界最大的代工汽车制造商麦格纳斯太尔(Magna Steyr)。该公司在欧洲和中国的工厂为宝马(BMW)、梅赛德斯-奔驰(Mercedes-Benz)、克莱斯勒(Chrysler)和阿斯顿马丁(Aston Martin)制造汽车,以满足超过产能的需求,或者制造特别版的小批量车型。对于其母公司麦格纳国际(Magna International)而言,汽车制造是一项副业,但麦格纳斯太尔的企业价值达到180亿美元,是所有大型汽车制造商的供应商。该集团在其创始人2012年末离开后十分重视增长(那之后股价上涨了166%)。就像iPhone一样,iCar的大多数利润将归苹果,但合作伙伴总能从中分得一杯羹。 /201601/421002

Just three months after raising an enormous sum of money from investors, Uber is at it again.三个月前刚从投资者那里筹集到一大笔钱的优步(Uber)又要融资了。The ride-hailing service is planning to raise close to billion in new venture capital from investors, according to people with knowledge of the matter. Investors are looking at a valuation of billion to billion.知情人士称,这家叫车务公司计划从投资者那里筹集近10亿美元风险投资。投资者预期该公司的估值在600亿美元到700亿美元之间。Such a fundraising round would make Uber the world#39;s most valuable private startup by far. A round just this summer valued the company at more than billion, a bit more than Facebook#39;s last big private capital raise in 2011.这样一轮融资会让优步成为目前世界上估值最高的初创公司。今年夏天那一轮融资对该公司的估值是500多亿美元,略高于Facebook上市前在2011年进行的最后一轮融资中的估值。Nearly as eye-popping as its soaring valuations has been the furious pace at which Uber has been raising money. The latest round of financing will be the eighth that the company has sought over the last five years.几乎和日渐飙升的估值同样吸引眼球的,是优步的融资步伐。最新一轮融资将是该公司在五年时间里的第八次融资。More precise targets on the size and the valuations will be determined after the company begins talks with investors in coming weeks, said the people, who spoke on the condition of anonymity. Executives at Uber and the company#39;s board have approved another round, and the company plans to start holding official conversations in the next few weeks, they said.要求匿名的消息人士称,有关融资规模和公司估值的准确目标,接下来几周该公司与投资者开始谈判后,才能确定下来。他们表示,优步的高管和公司董事会已经批准进行另一轮融资,公司计划在未来几周正式开始对话。An Uber spokeswoman declined to comment Friday.周五,优步的一名女发言人拒绝置评。While Facebook#39;s last big fundraising round took place a year before the social network went public, Travis Kalanick, Uber#39;s founder and chief executive, has little interest in going public in the near future.尽管Facebook最后一轮大规模融资结束一年后,这家社交网络公司便上市了,但优步创始人兼首席执行官特拉维斯·卡兰尼克(Travis Kalanick)对于在近期内上市几乎没什么兴趣。“We#39;re like eighth-graders. We#39;re in junior high and someone is telling us that we need to go to the prom, and it#39;s just a little early,” Kalanick said at The Wall Street Journal#39;s WSJDLive Conference in Laguna Beach, California, on Tuesday. “Let us get into high school before we start talking about these sorts of things.”“我们就像八年级学生。我们刚上初中,就有人对我们说,要参加毕业舞会,实在有点早,”卡兰尼克周二在《华尔街日报》(The Wall Street Journal)在加州拉古纳海滩举办的WSJDLive全球科技大会上说。“我们还是先上了高中再谈这些事情吧。”Founded in San Francisco in 2009, Uber has swollen to operations in more than 300 cities across 63 countries around the globe.2009年成立于旧金山的优步,业务已遍及全球63个国家的300多个城市。Throughout Uber#39;s rapid expansion, investors have poured money into the company at a staggering rate. To date, the company has raised more than billion from investors including Benchmark and Google Ventures, as well as large financial firms like Goldman Sachs and TPG Growth.在优步的快速扩张中,投资者大笔投钱的速度令人震惊。迄今为止,该公司已筹集了逾80亿美元,投资者包括Benchmark和谷歌风投(Google Ventures),以及高盛(Goldman Sachs)和TPG Growth等大型金融机构。 /201510/405832

Shoushi Calendar《授时历》Shoushi Calendar,the most outstanding calendar in ancient China,was compiled by Guo Shoujing,a prominent scientist in the Yuan Dynasty,and his colleagues. Enforced in 1281,throughout the Ming Dynasty and the begin-nin4 of the Qinq Dynasty,the calendar was used for over 360 years.《授时历》是中国古代最优秀的历法。由元代著名科学家郭守敬等人编制,从1281年开始实行,历经整个明代,一直到清初,共用了360多年。The reason why the calendar was used for such a long time has much to do with its accuracy in calculation. In the first place,it employed astronomical docu-ments of the highest accuracy in its time. For instance,it set the tropical year at 365.2425 days,which was the exactly the same as that in the currently used Gre-gorian Calendar, 301 years preceding the latter though. Secondly, based on earlier scholars finding that the length of the tropical year was gradually shortening,the Shoushi Calendar held that the tropical year shortened by 0. 0001 day every 100 years,which was more accurate as compared with earlier researches.《授时历》之所以沿用这么长时间,和它的计算精度非常高有很大关系。首先,它使用了当时最为精确的天文资料。例如,它确定了回归年的长度为365.2425日,与现今通行的公历值完全一致,但是它比格里高利历早了301年。其次,它吸收了前人研究发现的回归年的长度在逐渐变小的观点,规定100年中回归年的长度减小0. 0001日。与前人研究相比,这个数值要精确一些。In addition,instead of the mathematical method of recording astronomical documents via complicated fractions,the calendar employed decimal fractions,which largely reduced calculation workload and guaranteed accuracy. It also made innovations in terms of calculation methods;for instance,the use of mathematical approaches like cubic interpolation,polynomial equations to the 4th order and spherical trigonometry.另外,《授时历》废除了用复杂分数表示天文资料的办法,使用小数制,不仅大大减少了计算量,也保了计算精度。《授时历》在计算方法上也有创新,例如三次插内插法、四次多项式方程、球面三角法等数学方法的使用。Soon after its compilation,the Shoushi Calendar was Sp to and adopted by Japan and Korea. In recent years,astronomers from Japan,European and North American countries are again showing interests in ahe Shoushi Calendar,and some broad and in-depth researches have been made. As an advanced and accurate calendar in the history of China,the Shoushi Calendar also occupies a distinct posi-tion in the history of world astronomy.《授时历》编制不久即传播到日本、朝鲜,并被采用。近年来日本和欧美等国的天文学家对《授时历》产生了新的兴趣,进行了广泛而深入的研究。作为中国历史上一部先进的、精确的历法,《授时历》在世界天文学史上也占有突出的位置。 /201511/409392

Hi-Tech Fabric Charges Devices On The Run - Literally!衣化身充电器Over the past few years, researchers have come up with many innovative ways to use human kinetic energy - from powering soccer fields to playgrounds and classroom lights. Now some scientists want to take it to the next level with a new fabric that harnesses everyday motion to power personal devices!过去几年,从尝试自发电球场和操场到教室灯控,科学家一直致力于找出利用人自身运动产生能源的新方法。现在,一些科学家想进一步研究出可以通过日常活动给电子产品充电的新布料。The brainchild of a team of scientists from South Korea#39;s Sungkyunkwan University and Australia#39;s University of Wollongong, the electricity producing fabric takes advantage of the Triboelectric effect (TNG). Also known as friction energy it is the electricity created when two different kinds of surfaces rub against one another.韩国成均馆大学和澳大利亚乌龙岗大学的科学小组共同开启此研究课题,发电的布料主要靠的是擦生电原理,即由不同的两面互相擦产生电力。While this sounds complicated, it is something we have all encountered. Remember the age-old trick of rubbing your head on a balloon to make your hair stand up? That is the triboelectric effect.As the surfaces rub together, the electrons move from one surface to the other. This leaves one object negatively charged (balloon) and the other positively charged (hair). Since opposites attract, the electrons in the hair ;leap; toward the balloon causing it to ;stand up.;虽然听起来难了点,我们平时生活中都遇到过。还记得那个用气球在头上擦后会使你头发立起来的小把戏吗?那就是擦生电原理。当两面擦时,电子从一面传到另一面。就导致了一个物体是负电极(气球)而另一个是正电极(头发),由于异性相吸,头发上的电子就朝着气球“跳“过去,然后就导致发丝直立。The WNTG not only eliminates the need for batteries, but also looks and feels like a regular fabric. An issue was that repeated wear or a trip to the laundry machine would wash away the silver and zinc coating. The researchers solved this problem by covering the layers with a thin film of plastic. In their laboratory trials they were able to use the fabric for more than 12,000 cycles.科学家研究的这种可穿戴擦发电布料不仅代替了电池,看起来也和常规的布料没什么两样。就是经常穿或者洗涤后,表面的银和锌的涂层会慢慢掉下来。为解决这个问题,研究者们用了很薄的一层塑料来覆盖布料外层。他们实验过这种布料大概能重复使用12000多次。Sang-Woo Kim and this team who reported their invention in the March ACS journal say that the fabric#39;s use goes beyond charging personal devices. They believe it could also be useful in a range of biomedical and other personal healthcare gizmos that need a reliable power source.Sang-Woo Kim和他的团队在三月的ACS周刊上报道过他们的发明,上面说这种布料用处远非局限于给个人电子用品充电,他们相信在需要稳定电源的生物医疗和其他个人健康小装置上都能大展身手。译文属原创,仅供学习和交流使用,未经许可,。 /201507/386083


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