• j英文字母怎么發(fā)音

    向上移動1米距離所作的功為1焦耳。 1J=1w·s=1A·V·s,即1瓦的機械工作1秒的釋放的能量為1焦耳,3.6*10^6J=1kwh,即1度,是電的常用單位。 ? 擴展資料 J——轉動慣量 轉動慣量(Moment of Inertia)是剛體繞軸轉動時慣性(回轉物體保持其勻速圓周運動或靜止的特性)的量度,用字母I或J表示。 在經典力學中,轉動慣量(又稱質量慣性矩,簡稱慣距)通J是英語中的一個重要元音字母,但它的發(fā)音似乎比其他字母要稍微復雜一些。究竟復雜在哪里呢?一起來看看吧。 ? “j常以I 或J表示,SI 單位為 kg·m2。對于一個質點,I = mr2,其中 m 是其質量,r 是質點和轉軸的垂直距離。 轉動慣量在旋轉動力學中的角色相當于線性動力學中的質量,可形式地理解為一個物體對于旋轉運動的慣性,用于建立角動量、角速度、力矩和角加速度等數(shù)個量之間的關系。 ? 以上是為大家介紹的j英文字母怎么發(fā)音的相關信息,希望對大家有一定的幫助。更多英語相關信息,可以關注滬江網查詢。 ? 特別提醒:如果您對英語學習感興趣,想要深入學習,可以了解滬江網校精品課程,量身定制高效實用的個性化學習方案,專屬督導全程伴學,掃一掃領200暢學卡。

  • Jessie J 新單《Masterpiece》

    滬江英樂:Jessie J 新單《Masterpiece》!該曲出自她于今年10月10日發(fā)行的第三張錄音室專輯《Sweet Talker》。這支MV帶你一起感受結石姐的一天,這樣的偶像還真的很接地氣的呢! 【Jessie J 新單《Masterpiece》】 歌詞: So much pressure, why so loud? If you don't like my sound, you can turn it down I gotta road And I walk it alone Uphill battle, I look good when I climb I'm

    2015-06-26

    滬江英樂 Jessie J

  • 初中英語牛津八年級下07(2)

    初中英語牛津八年級下07(2) Moments later,we were all out of the cage. The crew was hiding among the kangaroos, and I was standing on the bed,beside Gork's head. I said loudly, 'Gork,this is Nobody.' Gork woke up. I aimed the torch at his eye and pressed the button The laser beam hit the eye.The eye went out.

  • 初中英語牛津八年級上06(1)

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  • 初中英語牛津八年級下02(1)

    初中英語牛津八年級下02(1) CHAPTER TWO Reading POLLUTUO FIGHTERS Judy is collecting some facts for a class project on pollution. She is interviewing Doctor Ray,a scientist,about trees. Why are you so interested in trees,Doctor Ray? Dr ray:They're the biggest and oldest living things on earth,Judy. Yes

  • 初中英語牛津八年級下07(1)

    初中英語牛津八年級下07(1) After his supper of kangaroo soup, Gork lay down on his bed and almost immediately fell asleep. He was snoring. The noise shook the cave. 'Listen,everyone,'I said.'Here's my plan.' From my pocket, I took my small, powerful laser torch. Because it was in a plastic case,the magnet

  • 初中英語牛津八年級下06(2)

    初中英語牛津八年級下06(2) You know where that is I hope.'Daisy nodded. 'Well,the Yangtze River carried me to a reservoir. I relaxed there for a few days, and then I travelled a long way and ran into the Huangpu River. Then it was time to get cleaned up.''Cleaned up?'Daisy sounded puzzled.'Yes. I was dirty

  • 初中英語牛津八年級下學期04(2)

    初中英語牛津八年級上學期04(2) On the abacus in the picture, the beads on the wires represent ones, tens,hundreds and thousands starting from the bottom wire. The picture on the right shows a modern electronic calculator. It can add,subtract, multiply and divide. It can also calculate percentages and square

  • 初中英語牛津八年級下06(2)

    初中英語牛津八年級下06(2) Gork They looked like kangaroos,giant kangaroos. Following them was a huge monster. It looked almost human except that it had a single,huge,red,glowing eye. The monster turned to close the door and shouted,'Good night,friends.' The friends outside shouted,'Good night, Gork.

  • 初中英語牛津八年級上學期05(2)

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