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時間:2022-08-15 來源:本站 點擊:258次

Oscar expelled in Shanghai Port's 5******

DALIAN, Nov. 3 (Xinhua) -- Oscar was expelled for being involved in a tussle after making four assists to guide Shanghai Port to a 5-1 win over Shanghai Shenhua in the first leg of the Chinese FA Cup semifinal on Wednesday.。

The former Chelsea midfielder was shown by TV replay to have exchanged punches with Shenhua player Sun Shilin in a brawl triggered by Port player Ablahan Halik's foul on Shenhua player Yu Hanchao in the 90th minute.。

Both Oscar and Sun got their marching order after the referee checked the VAR.。

The 30-year-old Brazilian player delivered four assists from the 15th to 85th minute to give Shanghai Port a 5-1 lead entering the second leg, which will be held next Sunday. Enditem。

Sport is "great healer": Houston looks into World Table Tennis Championships amid pandemic******

HOUSTON, Nov. 16 (Xinhua) -- A lack of a large fan base locally. Challenges posed by the COVID-19 pandemic. All can't stop the Houston organizers from dreaming big about the World Table Tennis Championships.。

"Our goals now are to put on magnificent world championships in spite of a pandemic," Janice Burke, the CEO of Houston Sports Authority, said of the upcoming World Table Tennis Championships in the largest city in Texas.。

The Championships, running from November 23 to 29, marks the first time that the sport's prestigious event has been staged in the Americas.。

"We are pleasantly surprised ticket sales went better than we expected...Right now we are expecting at least 23,000 to 27,000 people to attend," Burke told Xinhua in a recent exclusive interview.。

As for concerns of the coronavirus pandemic, Burke said there would be no mandatory requirements for mask-wearing and vaccination, though organizers "strongly encourage" all the attendees to take such precaution measures.。

The George R. Brown Convention Center, the venue of the Championships in downtown Houston, has designed a corridor separating athletes from audiences and installed a special system to clear viruses in the air, according to Burke.。

She said athletes from up to 90 countries and regions across the world are coming to Houston, where thousands of local volunteers have already signed up to be part of the event.。

The Chinese community, representing "a large part in Houston", is passionate about the sport and "has really helped us", she added.。

"Our community has been very excited...everyone has embraced this event," Burke observed, "I think it goes to the international nature of our city...we have so many different emigrants and different communities that come together and live together."

The city's sports chief also noted that the upcoming Championships coincides with the 50th anniversary of the legendary Sino-U.S. Ping-Pong Diplomacy and thus becomes "a special moment of remembrance."

"People should not forget that the modern era of the close friendship between China and the United States began with Ping-Pong Diplomacy, and the younger generation needs to remember this important and wonderful history," she said, "I think it's very important to learn from the past."

Fifty years ago, the U.S. table tennis team was invited by its Chinese counterpart to visit China at the conclusion of the 31st World Championships in Nagoya, Japan. The U.S. players landed in Beijing on April 10, 1971, becoming the first U.S. group to visit China since the founding of the People's Republic of China in 1949.。

The Chinese team paid a return visit the following year. The mutual visits broke the ice in two decades of estranged China-U.S. relations and eventually led to the normalization of bilateral ties.。

"Throughout history, sports can be that great healer," Burke said when looking ahead to the Championships, citing former South African President Nelson Mandela's thoughts on how sports can unite an entire nation and heal hurts between different cultures.。

"I believe that sports can unite and can create really strong friendships that you would never expect. And so I'm really pleased that we can be an extension of that here in Houston," she concluded. Enditem。

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    尼康Z卡口的镜后距较短,加上卡口较大,所以相对以往F卡口更容易制造超大光圈镜头,像NIKKOR Z 58mm F0.95 S Noct及NIKKOR Z 50mm F1.2 S便是代表作。然而,最近有消息指尼康将会继续挑战光学技术界限,并注册了两支令人惊讶的恒定大光圈变焦镜头35-50mm F1.2和50-70mm F1.2的专利,不知道两镜会否像NIKKOR Z 58mm F0.95 S Noct一样,较为偏向开拓专业拍片市场呢? 

    NIKKOR Z 35-50mm F1.2 和 NIKKOR Z 50-70mm F1.2变焦幅度不大,变焦范围分别只有15mm和20mm,可能会有人质疑为何尼康不索性直接申请35-70mm F1.2设计专利?尼康要将原来的35-70mm两倍变焦镜再分拆成两支镜头,是考虑到镜头的体积问题,因为从流出的专利文件中看到单是35-50mm F1.2的光学设计已经十分复杂,既要在整个变焦范围拥有能人所不能的F1.2大光圈,而且光学质素要有一定保证才可以匹配这支神级镜头。另外,官方的申请文件更提到 NIKKOR Z 35-50mm F1.2的长度可能有210mm,足以媲美NIKKOR Z 70-200mmF2.8 VR S,但因为NIKKOR 35-50mm F1.2拥有更大的入光量,相信镜头直径几乎肯定可以超越NIKKOR Z 58mm F0.95 S Noct的102mm。 

NIKKOR Z 35-50mm F1.2 设计专利 

    其实过去在市场上也有超低变焦倍率的恒定大光圈变焦镜头,像适马在2015年就曾经发布24-35mm F2 DG HSM|Art全画幅单反镜头,而近一点的就有松下和徕卡推出的M4/3系统Leica DG Vario Summilux 10-25mm F1.7 Asph. 和 Leica DG Vario Summilux25-50mm F1.7 Asph.,不过由于松下使用于M4/3感光元件,镜头的外型也不致于大得那么恐怖,除了可用于视频拍摄外,配合外型较大的M4/3机身也可以在拍照时使用。反之尼康是次的两支镜无论是属全画幅或是APS-C画幅都会属于庞然大物,制作成本应该比NIKKOR Z 58mm F0.95 S Noct更高,但是如果属针对专业拍片,以35-50mm F1.2和50-70mm F1.2的规格已经吸引到部分专业摄影师的注意,以快将推出的Z9旗舰无反相机强调长时间拍摄8K 30p视频能力,不难推测尼康研发部门会考虑将35-50mm F1.2和50-70mm F1.2放于更高阶的商业电影市场。 

NIKKOR Z 50-70mm F1.2 设计专利 






  1. 听取和审议西安市人民政府工作报告。











  8. 决定西安市第十七届人民代表大会各专门委员会的设立及其组成人员人选。





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4.学者:解放军每年大量入列新装备 令美焦虑和冒进

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