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- 長(zhǎng)臉先生不帶V 2009-06-01 00:00:00
- 在網(wǎng)頁(yè)上方的搜索框內(nèi)鍵入你所想創(chuàng)建的貼吧名稱，然后點(diǎn)“百度一下”按鈕即可
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熱門問答
- 怎么創(chuàng)貼吧呢???幫我創(chuàng)一個(gè)吧
2009-05-16 12:08:04
306
2
- 怎么加入白度貼吧
- 我要加入某個(gè)貼吧
2010-02-06 13:16:45
368
3
- 白度貼吧要怎么發(fā)貼
2016-04-30 02:06:16
440
2
- 給我一個(gè)建議吧
- 我的化學(xué)基礎(chǔ)很差 很快就要高考了 有什么好點(diǎn)的辦法能讓我盡快提高呢
2006-05-02 01:03:18
647
5
- 威力吧流量計(jì)的“吧”應(yīng)該是哪個(gè)字呢？是“吧”還是“巴”？
2010-10-12 08:17:43
364
3
- 如何在白度貼吧發(fā)貼子
2016-07-03 20:54:37
345
1
- 大俠們幫我解釋一下震動(dòng)傳感器吧報(bào)警的原理吧，這個(gè)電路圖有點(diǎn)看不懂？
2011-09-26 02:42:16
362
2
- 請(qǐng)幫我翻譯一段專業(yè)英語(yǔ)吧。。急用。。多謝。。。
- Practical applications of colossal magnetoresistive(CMR) oxides are limited by the large magnetic fields and/or low temperature required to observe a significant change in electric resistivity[1-5]. In recent years，research on tunneling mag... Practical applications of colossal magnetoresistive(CMR) oxides are limited by the large magnetic fields and/or low temperature required to observe a significant change in electric resistivity[1-5]. In recent years，research on tunneling magnetoresistance(TMR) is a very active field because of its scientific interest and potential technological applications[6].Polycrystalline Sr2FeMoO6 perovskite is a candidate for magnetic sensors owing to its high ferromagnetic transition temperature …（Tc~420K）and the half-metallic electronic band structure predicted theoretically [7]. The conduction electrons in this compound are expected to be highly spin-polarized even at room temperature. More recently， perovskite Sr2FeMoO6 with nanometer grain size showed large magnetoresistance(~20%) at a low magnetic field of 4k Oe and at room temperature[8].Dai et al.[9]observed two different ordered structures in polycrystalline Sr2FeMoO6 perovskite: the double perovskite and the superstructure with tripled c-axis(ST).In this paper， another new layered structure of body-centered tetragonal phase (BT) is reported for the polycrystalline magnetoresistive Sr2FeMoO6 sample. Ceramic samples of Sr2FeMoO6 were prepared by standard solid state reaction. Stoichiometric materials of SrCO3，F(xiàn)e2O3 and MoO3 were mechanically mixed， and then calcined at 950℃ for 4h in air.The calcined mixture was then ball-milled and made into pellets followed by sintering at 1250℃for 4h in carbon monoxide atmosphere.Transmission electron microscopy(TEM) specimens were prepared by mechanical polishing，dimpling and ion milling.Electron diffraction patterns were taken at 120kV using a Phillips CM12 electron microscope， and high resolution TEM imaging was conducted using JEOL 2010 microscope. Energy dispersion of X-rays(EDX) was conducted by TEM attached with EDAX PV9100. 展開
2009-05-20 03:06:41
494
1
- 一個(gè)軟件是怎么做出來的，比如說QQ吧
- 安裝的話會(huì)有一個(gè)安裝包，我們下載的那個(gè)QQ就是這個(gè)安裝包把它壓縮制成的嗎，具體的過程是怎么樣的，越詳細(xì)越好。
2010-05-16 04:06:14
485
5
- 無創(chuàng)DNA怎么檢查
2016-09-16 12:29:09
380
1
- 血尿酸偏高誰(shuí)知道啊？詳細(xì)幫我介紹下吧
2012-05-05 03:35:17
429
1
- 無創(chuàng)解惑之無創(chuàng)DNA檢測(cè)和無創(chuàng)親子鑒定的區(qū)別
2018-11-20 22:06:16
419
0
- 請(qǐng)問貼吧頂帖軟件是什么原理？在學(xué)編程
- 請(qǐng)問貼吧頂帖軟件是什么原理？在學(xué)編程以前用vb操作過自動(dòng)化頂帖，但是是可視化的，就是通過控制網(wǎng)頁(yè)元素實(shí)現(xiàn)自動(dòng)回帖功能，前臺(tái)能看到自動(dòng)回帖的操作步驟，但是效率太低了，因?yàn)榭梢暬鋵?shí)和人打開網(wǎng)頁(yè)頂帖一樣需要先加載什么的，而我用過一些貼吧頂帖的軟件... 請(qǐng)問貼吧頂帖軟件是什么原理？在學(xué)編程以前用vb操作過自動(dòng)化頂帖，但是是可視化的，就是通過控制網(wǎng)頁(yè)元素實(shí)現(xiàn)自動(dòng)回帖功能，前臺(tái)能看到自動(dòng)回帖的操作步驟，但是效率太低了，因?yàn)榭梢暬鋵?shí)和人打開網(wǎng)頁(yè)頂帖一樣需要先加載什么的，而我用過一些貼吧頂帖的軟件，都是不可視化完成的，就是他軟件上只用填寫貼吧名和帖子id就能自動(dòng)完成頂帖，前臺(tái)是看不到頂帖的過程的，比如不會(huì)再你電腦打開帖子鏈接，然后加載什么的，就是前臺(tái)不可視化，效率很高，頂帖也很快，我想知道這個(gè)是什么技術(shù)手段？是什么原理實(shí)現(xiàn)的？目前在學(xué)java編程，之后想做個(gè)類似軟件，有誰(shuí)知道這個(gè)原理嗎？謝謝 展開
2018-12-07 19:56:19
587
0
- 幸運(yùn)+農(nóng)場(chǎng)貼吧招聘會(huì)上通知復(fù)試的公司
- 幸運(yùn)+農(nóng)場(chǎng)貼吧招聘會(huì)上通知復(fù)試的公司素食則氣不濁；獨(dú)宿則神不濁... 幸運(yùn)+農(nóng)場(chǎng)貼吧招聘會(huì)上通知復(fù)試的公司素食則氣不濁；獨(dú)宿則神不濁 展開
2017-03-03 17:05:00
365
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- 怎么進(jìn)白度貼吧里面編寫自己的產(chǎn)品軟文推廣
- 怎么進(jìn)白度貼吧里面編寫自己的產(chǎn)品軟文推廣
2016-01-11 09:58:40
264
1
- 這是霧化片吧？這連上電源可以用吧？
2017-08-21 20:30:07
524
1
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