查询词典 prereduction

Effect of Ni loading, prereduction and reaction temperature were studied.

甲烷二氧化碳重整制合成气近年来引起学术界和产业界的广泛关注，但该反应是强吸热反应，能耗大并且催化剂易于积炭，因此限制了该工艺过程的工业应用[2，3]。

The operational parameters of this process are very flexible. The optimum postcombustion degree is 25～45% corresponding to the prereduction degree of 100～50%. The energy efficiency of the process is as high as 65%.

该工艺操作灵活，顶还原度50～100％对应的优化组合的二次燃烧率为45～25％，煤耗相应为725～683kg／tFe，低于其它工艺的煤耗，系统自身能量利用率可达65％以上，高于其它工艺流程。

Ultrafine copper powder s were prepared by direct reduction method with hydrazine hydrate and formaldehyde as composite reductive agent and glucose prereduction method,respectively.

分别采用水合肼-甲醛复合还原剂法以及葡萄糖预还原法制得了微米级的超细铜粉，并利用粉末X射线衍射以及扫描电镜对其进行了表征。

The Ti-enriched slag up to 90--98% TiO_2 may be producedby prereduction of the LUDA ilmenite with plasma smelting.

结果表明，预还原钛铁矿经等离于熔练，可得到含二氧化钛90—98％的富钛渣。

The best catalytic activity and selectivity could be found in the prepared catalyst system with the optimum combination of the ionic liquid, nano-Pd, and support. The stabilizer is also used to prevent the aggregation of nano-Pd particles. One of the advantages of this approach is that the prereduction of catalyst is not required.

其中离子液体、奈米钯金属及担体皆有其功能，三者之组合才能达到良好之效果，同时，在合成奈米钯过程中，必须使用稳定剂以避免奈米钯金属之聚集此触媒系统之另一优点为不需先加氢还原处理，耐水性强且可重覆使用，是一种颇具潜力之选择性氢化触媒。

If by means of a prereduction MRI or after neurologic deterioration during closed reduction, the surgeon becomes aware of a fragment of disc material displaced into the spinal canal, then an anterior discectomy, open reduction, fusion, and plating becomes necessary.2,7,9 In approximately half of the cases, a closed reduction will be successful in reducing the dislocation before surgery.50 In the majority of the others, an intraoperative reduction performed after the discectomy and decompression will achieve anatomic reduction.9,51 For those patients in whom an anterior discectomy and decompression have not been successful in reducing the dislocation, then a supplemental posterior open reduction should be performed.52

假如借助MRI检查，或在闭合复位过程中神经症状进一步加重，外科医生意识到有椎间盘碎片突入了椎管，此时就需要前路椎间盘切除减压、开放复位和固定融合。大约有一半的病例手术以前能够通过闭合复位来成功的将脱位复原，剩下的病例则需要在术中将椎间盘切除减压来达到解剖复位。假如有病人经过前方的椎间盘切除和减压后仍然不能成功的还原脱位，则需要再行后方的开放复位术。

The two combining equations of the oxygen balance and the enthalpy balance for prereduction and smelting reduction reactors are formulated respectively- Two equations can be related reasonably by means of calculating thermodynamic results and the Rist dia...

由热力学计算，将上、下两部有机联系起来，得到全过程Rist操作线图。从而，建立了竖炉-铁浴二步法熔融还原过程数学模型，可用来计算全过程氧耗和燃料比等操作参数。

The feature of the shaft furnace-iron bath smelter charging carbon-bearing pellets is that partial off-gas of shaft furnace is mixed with gas from smelter and then put into shaft for preheating and pre-reduction. The optimum operational parameter is at the point of prereduction degree of 52% and post-combustion degree of 32% where the coal consumption is 750kg/tone-hot metal and oxygen consumption is 420Nm〓/tone-hot metal.(5) The systematic simulation of rotary hearth furnace-iron bath smeter is firstly formulated.

4本文建立的含碳球团竖炉—铁浴工艺流程模型的特点之一是竖炉炉顶出口煤气的一部分与铁浴煤气混合后，重新进入竖炉，本文报道的对系统部分出口物流返回反应器的非序贯式流程进行的系统模拟，为今后类似问题的模拟提供了参考，本工艺的最低消耗点的操作条件是：预还原度52％，二次燃烧率32％，这时的最低煤耗为750kg／tFe（中挥发份煤VM=19％），氧耗约420Nm〓／tFe，对应于预还原度30～70％的优化组合的二次燃烧率为32～13％。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失