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Processor Up to 6 th  Generation Intel ®  Core™ i7 Processor Operating System Windows 10 Home Graphics Up to Intel® Iris™ Graphics 540 Memory Up to 16GB LPDDR3 1866 MHz (Onboard) Webcam 1MP 720p HD CMOS Camera Storage Up to 512GB PCIe SSD Audio JBL ®  Stereo Speakers with Dolby ®  DS 1.0 Home Theater ®  Certification Battery Local Video Playback Up to 9 hours playback with display brightness set at 200 nits WiFi Browsing Up to 10 hours browsing with display brightness set at 200 nits Display 13.3" QHD+ LED IPS Glossy Multi-touch (3200x1800) with integrated camera Dimensions (W x D x H) (inches) : 12.75" x 8.86" x 0.59" (mm) : 324 x 225 x 14.9 Weight Starting at 2.8 lbs (1.3 kg) WLAN WiFi 2 x 2 802.11 a/c, Bluetooth ®  4.0 Ports 2 x USB Type A 3.0 1 x USB Type C 3.0 with Video-out 1 x DC-in with USB 2.0 Function 4-in-1 Card Reader (SD, MMC, SDXC, SDHC) Audio Combo Jack

Multi-User MIMO, multiple pipe water plant simultaneously.  Single-User MIMO, single pipe water plant. Multi-user MIMO (MU-MIMO) is a set of multiple-input and multiple-output technologies for wireless communication, in which a set of users or wireless terminals, each with one or more antennas, communicate with each other. In contrast, single-user MIMO considers a single multi-antenna transmitter communicating with a single multi-antenna receiver. In a similar way that OFDMA adds multiple access (multi-user) capabilities to OFDM, MU-MIMO adds multiple access (multi-user) capabilities to MIMO. MU-MIMO has been investigated since the beginning of research into multi-antenna communication, including work by Telatar on the capacity of the MU-MIMO uplink. SDMA massive MIMO coordinated multipoint (CoMP) and ad hoc MIMO are all related to MU-MIMO; each of those technologies often leverage spatial degrees of freedom to separate users. Recource from  https://en.wikipedia.org/w

Total Addressable Market Investment managers love investing in companies with a very large T.A.M., in fact many venture capital investors won't invest in a start-up unless the T.A.M. is over $20 billion as more than 50% of companies fail within a few years of being founded. As a result, we always want the ones that do succeed to have an opportunity to be a billion dollar company (in terms of annual revenue). If a company gets 5% marketshare of a $20bn market, then this equals $1bn in revenue. If you can't find the T.A.M., then add up the annual revenue for the top 25 companies in a given sector for an estimate.

说法一： 早在东汉时期，古人就在昌南（现在的景德镇）建造窑坊，烧制陶瓷。到了唐朝，由于昌南土质好，先人们又吸收了南方青瓷和北方白瓷的优点创制出一种青白瓷。青白瓷晶莹滋润，有假玉器的美称，因而远近闻名，并大量出口欧洲。 十八世纪以前，欧洲人还不会制造瓷器，因此中国特别是昌南镇的精美瓷器很受欢迎。在欧洲，昌南镇瓷器是十分受人珍爱的贵重物品，人们以能获得一件昌南镇瓷器为荣。就这样欧洲人就以“昌南”作为瓷器（china）和生产瓷器的“中国”（China）的代称，久而久之，欧洲人就把昌南的本意忘却了，只记得它是“瓷器”，即“中国”了。 西方瓷器原本是从中国输入的。明朝的时候，大批的中国瓷器产品就开始输往西方世界。波斯人称中国的瓷器为chini，欧洲商人在波斯购买中国瓷器也同时把一词带回了西方。后来，他们又把chini改为china，并且把生产china的中国也一并称为China。欧美人谈到China的时候，往往联想到China(中国)是china(瓷器)之乡。 说法二：与瓷器无关——中国为什么叫China？ 新民晚报2004年8月3日16版介绍景德镇瓷文化。其文说，宋元两代景德镇的制瓷技术已经传到朝鲜、日本、越南。又说，明清两代瓷器大量出口，经阿拉伯传到欧洲。这些史实，我无异议。唯可疑者，其说china由来，文云：“民间历来有几种说法。一种说法是china系根据秦字读音转化而来。但在景德镇最为流行的说法是china是汉语昌南(原景德镇名)的音译。随着景德镇精白瓷大量流传到海外，才使得瓷(china)成为中国的代名词。” 说china最初是昌南地名译音，我觉得很新鲜。景德镇原名昌南镇，在宋真宗景德年间(1004年起)改名景德镇。此时所制瓷器已负盛名，特供御用。按照“景德镇最为流行的说法”推论，其后本镇瓷器外销朝鲜、日本、越南，又其后经阿拉伯远销到欧洲，皆以产地昌南作为商品名称。昌南两音，口碑远播，写成法文便是chine，写成英文便是china。china又回译成汉文瓷器。瓷器名声响遍全球，欧洲人就把中国也叫作瓷器，而大写其字头，成了China。这个推论亦能自圆其说。 然有极大障碍，景德镇人难以克服。就是至今无人能够否认英文China起源于印度古梵文“支那”。这个支那又作脂那、至那，三千年前就出现了。想想三千年前是什么意思吧。那就是说，什么昌南，什么瓷器

A Bose–Einstein condensate (BEC) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero (that is, very near 0 K or −273.15 °C). Under such conditions, a large fraction of bosons occupy the lowest quantum state , at which point macroscopic quantum phenomena become apparent. It is formed by cooling a gas of extremely low density, about one-hundred-thousandth the density of normal air, to ultra-low temperatures. Due to the unique properties of the condensate, it was shown by Lene Hau [1] that light can either be stopped or slowed down significantly to the velocity of 17 meters per second, resulting in an extremely high refractive index. Resource from Wikipedia Bose–Einstein condensate