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• 2018-12-10 19:08發(fā)布了問答

  p20模具鋼的熱膨脹系數(shù)是多少

  　

  666人看過

• 2018-11-20 19:55發(fā)布了問答

  德勝鋼鐵的鋼筋上有DSCX的符號(hào)，DS表示德勝，CX是什么意思？

  　

  462人看過

• 2018-11-16 20:40發(fā)布了問答

  裝導(dǎo)熱油的桶是一般固廢嗎?

  　

  355人看過

• 2018-11-16 16:56發(fā)布了問答

  容災(zāi)的分類

  　

  263人看過

• 2017-10-11 14:33發(fā)布了問答

  汽輪機(jī)汽缸和轉(zhuǎn)子的熱膨脹

  汽輪機(jī)轉(zhuǎn)子以推力盤面為死點(diǎn)，向排汽端膨脹，而汽缸以排汽接管的ZX線為死點(diǎn)向進(jìn)汽端膨脹，這樣是否會(huì)發(fā)生動(dòng)靜部分的碰撞呢？

  674人看過

• 2017-05-14 00:21發(fā)布了問答

  影響耐火材料導(dǎo)熱性能的因素有哪些

  　

  540人看過

• 2016-07-28 07:02發(fā)布了問答

  dsc有什么作用

  494人看過

• 2016-02-29 15:07發(fā)布了問答

  停車場系統(tǒng)出現(xiàn)時(shí)間異常禁止刷卡怎么辦

  　

  437人看過

• 2015-07-20 08:33發(fā)布了問答

  索尼 dsc-hx50 數(shù)碼相機(jī)wifi怎么用

  　

  515人看過

• 2014-12-25 16:06發(fā)布了問答

  有沒有導(dǎo)熱系數(shù)為0的物質(zhì)

  　

  463人看過

• 2011-09-15 07:31發(fā)布了問答

  導(dǎo)熱油到底是干什么用的

  　

  466人看過

• 2010-11-22 11:16發(fā)布了問答

  DSC-HX1用什么鏡頭好？

  我的產(chǎn)品有些比較大，想拍好一點(diǎn)，清晰一點(diǎn)，能將產(chǎn)品拍得有質(zhì)感一點(diǎn)，用什么鏡頭好一點(diǎn)呢？不用太貴，一般就OK了

  323人看過

• 2008-12-12 12:48發(fā)布了問答

  機(jī)械英語翻譯網(wǎng)站

  The varying rates of thermal expansion are the basis of the bimetal thermostat. The metal stripe of the thermostat have greatly different thermal expansion coefficients. When they are bonded together and heated， the metal with the high expa... The varying rates of thermal expansion are the basis of the bimetal thermostat. The metal stripe of the thermostat have greatly different thermal expansion coefficients. When they are bonded together and heated， the metal with the high expansion rate elongates much more than the other strip. This causes the strips to bend and touch the contact point. The lead screw goes through a pair of half nuts， which are fixed to the rear of the apron. When actuating a certain lever， the half nuts are clamped together and engage with the rotating lead screw as a single nut， which is fed， together with the carriage， along the bed. The width of cut is the width of the workpiece in contact with the cutter in a direction normal to the feed. We can easily see that the width of cut should decrease with increasing depth of cut to keep the load and power requirement below those that can be met by the cutter and the machine tool， respectively. The control unit coordinates the operations of all the other components. It controls the input and output information between the computer and the outside world through the I/O section， synchronizes the transfer of signals between the various sections of the computer， and commands the other sections in the performance of their functions. 展開

  512人看過

• 2007-04-21 06:55發(fā)布了問答

  如何學(xué)好生化？幫忙啊~~~~~~~~~~~~~~

  偶們要考試了~~Z好一個(gè)禮拜就能搞定，不要求掌握的特別精細(xì)，但基本的都要知道。哪位強(qiáng)人指點(diǎn)一下啊~~... 偶們要考試了~~Z好一個(gè)禮拜就能搞定，不要求掌握的特別精細(xì)，但基本的都要知道。哪位強(qiáng)人指點(diǎn)一下啊~~ 展開

  430人看過