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  • 初中英語(yǔ)牛津八年級(jí)下02(1)

    初中英語(yǔ)牛津八年級(jí)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(yǔ)牛津八年級(jí)下07(2)

    初中英語(yǔ)牛津八年級(jí)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.

  • j英文字母怎么發(fā)音

    向上移動(dòng)1米距離所作的功為1焦耳。 1J=1w·s=1A·V·s，即1瓦的機(jī)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(kuò)展資料 J——轉(zhuǎn)動(dòng)慣量 轉(zhuǎn)動(dòng)慣量(Moment of Inertia)是剛體繞軸轉(zhuǎn)動(dòng)時(shí)慣性（回轉(zhuǎn)物體保持其勻速圓周運(yùn)動(dòng)或靜止的特性）的量度，用字母I或J表示。 在經(jīng)典力學(xué)中，轉(zhuǎn)動(dòng)慣量（又稱質(zhì)量慣性矩，簡(jiǎn)稱慣距）通J是英語(yǔ)中的一個(gè)重要元音字母，但它的發(fā)音似乎比其他字母要稍微復(fù)雜一些。究竟復(fù)雜在哪里呢？一起來(lái)看看吧。 ? “j常以I 或J表示，SI 單位為 kg·m2。對(duì)于一個(gè)質(zhì)點(diǎn)，I = mr2，其中 m 是其質(zhì)量，r 是質(zhì)點(diǎn)和轉(zhuǎn)軸的垂直距離。 轉(zhuǎn)動(dòng)慣量在旋轉(zhuǎn)動(dòng)力學(xué)中的角色相當(dāng)于線性動(dòng)力學(xué)中的質(zhì)量，可形式地理解為一個(gè)物體對(duì)于旋轉(zhuǎn)運(yùn)動(dòng)的慣性，用于建立角動(dòng)量、角速度、力矩和角加速度等數(shù)個(gè)量之間的關(guān)系。 ? 以上是為大家介紹的j英文字母怎么發(fā)音的相關(guān)信息，希望對(duì)大家有一定的幫助。更多英語(yǔ)相關(guān)信息，可以關(guān)注滬江網(wǎng)查詢。 ? 特別提醒：如果您對(duì)英語(yǔ)學(xué)習(xí)感興趣，想要深入學(xué)習(xí)，可以了解滬江網(wǎng)校精品課程，量身定制高效實(shí)用的個(gè)性化學(xué)習(xí)方案，專屬督導(dǎo)全程伴學(xué)，掃一掃領(lǐng)200暢學(xué)卡。

  • 初中英語(yǔ)牛津八年級(jí)下07(1)

    初中英語(yǔ)牛津八年級(jí)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(yǔ)牛津八年級(jí)下06(2)

    初中英語(yǔ)牛津八年級(jí)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(yǔ)牛津八年級(jí)下06(2)

    初中英語(yǔ)牛津八年級(jí)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(yǔ)牛津八年級(jí)下02(2)

    初中英語(yǔ)牛津八年級(jí)下02(2) That's wonderful! Trees cool the air as well as clean it. Three trees can do the job of 15 air conditioners running almost all day. You certainly know a lot about trees Doctor Ray. Thank you,Judy,but I don't,really. Scientists are only now beginning to understand them. For example

  • 初中英語(yǔ)牛津八年級(jí)下02

    100 million trees in the next 10 years. [13:03.73]If you want to more about us,please send us an e-mail at info@ . [13:18.28]We hope you will have lots of fun. [13:23.55]From TREES FOR LIFE 更多內(nèi)容請(qǐng)查看《初中英語(yǔ)牛津版八年級(jí)匯總專輯》

  • 初中英語(yǔ)牛津八年級(jí)下06

    could use 112.5 litres of water taking one shower. [13:18.85]In a year,that is almost 45,000 litres for your showers! [13:27.18]Taking a bath uses even more water than showers — about twice as much. [13:36.46]A bath can easily use 225 litres of water. 更多內(nèi)容請(qǐng)查看《初中英語(yǔ)牛津版八年級(jí)匯總專輯》

  • 初中英語(yǔ)牛津八年級(jí)下03

    out.The floor's wet.You might slip. [09:20.69]P:Here's an antique shop.Let's go in. [09:25.45]J:Right,but take care.Don't break anything. [09:32.21]P:Oh,I like this vase.I'll just pick it up and...oops! [09:38.87]J:Look out!You almost dropped it. [09:44.93]P:Gosh,the label says it's 900 years old. [09:50.39]But it only costs 64 yuan. I'm going to buy it. [09:56.56]J:Be careful.Are you sure it's real? 更多內(nèi)容請(qǐng)查看《初中英語(yǔ)牛津版八年級(jí)匯總專輯》

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