The temperature reduction was shown to be an effective method for the most active C 6 hydroxy mono protection.
研究发现,降低温度是对蔗糖C6位最活泼羟基进行单一选择性保护的有效方法。
The constant volumetric delivery and melt temperature reduction bring a significant improvement in the quality of the end product.
稳定的体积流量和降低熔体温度对于改善最终产品的质量有重要意义。
Temperature reduction leads to increasing N_2O formation, but to reducing NOformation; bituminous coal yields more N_2O than lean coal.
降低温度导致N_2O生成量增加而同时NO生成量减少,烟煤N_2O产量要比贫煤高一些。
The temperature reduction results from the Bernoulli conversion of random gas-particle motion (temperature and pressure) into directed motion (flow).
这个温度降低是由于随机气体微粒运动(温度和压力)的柏努利转换成定向运动(流)而造成的。
After decompressional filtration, washery and high-temperature reduction can we get silver precipitation and the rate of recovery can reach to 97.51% and the pureness to 98.5%.
银的沉淀经减压过滤、洗涤及高温还原而得到金属单质银。 银的回收率达97.5 1% ,回收银的纯度为98.5 % 。
The fast cooling technology of steam turbine is the process that the cooling medium is used to accelerate the temperature reduction of cylinder and rotor after the shutdown of turbogenerator.
汽轮机快速冷却技术是在汽轮机组停运后,向汽轮机内部通以适量的较低温度的冷却介质,进行强迫对流换热,加快汽缸和转子温降速度的过程。
The invention simplifies the process layout, saves the equipment space, reduces the temperature reduction of the tube blank, lowers the production cost and improves the production efficiency.
本发明简化工艺布局、节省设备空间、减少管坯温降、降低生产成本,提高了生产效率。
After analysis for the unit, the causes were found and some measures were taken to obtain good temperature reduction effect for the bearing pads by changing the admission flow of control valves.
经过对机组分析,找出了问题的原因,并采取了处理措施,通过改变调门部分进汽度取得了良好的轴瓦降温效果。
Based on the material of iron in some iron and steel companies, the low temperature reduction degradation of iron ore in the condition of injecting blends of coal and waste plastic in BF is studied.
以国内某钢铁公司的炼铁原料为基础,进行了高炉喷吹煤与废塑料条件下的矿石低温还原粉化性能研究。
The results show that the temperature reduces fast at first stage, because of the larger difference between blade and air. Then, the temperature reduction rate decreases slowerly, in cooling process.
结果表明:初始时刻叶片表面和环境温差较大,温降较快,随着冷却过程进行,温降速度变缓;
In this paper, the temperature reduction of cylinder head metal wall and the influence on engine performance are investigated by different thickness of PSZ coating on cylinder head combustion surface.
本文研究了气缸盖火力面喷涂不同厚度的PS Z层对气缸盖金属壁面温度降低的情况及对发动机性能的影响。
This leads to a further reduction in temperature, creating more ice and possibly a runaway, 'snowball earth' scenario.
这将导致温度进一步降低,产生更多结冰并可能出现失去控制的“雪球地球”情景。
They said that only two out of 10 developedcountries' reduction targets submitted to the Copenhagen accord qualifyas "sufficient" to keep global temperature rise below 2C.
他们说,发达国家提交给哥本哈根协议的减排目标,10个里只有2个符合“足以”使全球气温上升控制在2摄氏度以内。
While it is possible to imagine doing so in a way that cancels out the change in average temperature caused by an increase in carbon dioxide, such a reduction would not simply restore the status quo.
二氧化碳浓度过高引起的平均温度变化,可能会因为实施第一种办法有所缓和,单纯减少太阳辐射量却并不能让气温恢复到以前的状况。 当地的温度仍旧会发生变化,比如受洋流,降雨量,土壤湿度和光合作用的影响。
He believes it's possible that obesity may result from a less obvious reduction in energy expenditure: a reduction in body temperature.
他认为肥胖很可能是由能量消耗量的不明显下降引起的:即体温的下降。
Refinetti concluded, "Although not yet replicated in humans, these results suggest that human obesity may be caused by a small reduction in the temperature at which the body maintains itself."
Refinetti教授总结道,“虽然研究的结果未能复制到人类,但也启发我们,人类的肥胖可能是由于人体所需要保持的体温所产生的轻微下降所导致的。”
The results showed that the if steel has better deep drawability, higher mechanical and texture strength and elongation if the hot rolling temperature was low with big reduction in ferrite region.
结果表明,较低的铁素体轧制温度和较高的铁素体区压下量时,IF钢具有更高的深冲性能、相对较高的强度、延伸率以及织构强度。
The exergy loss of primary steam after temperature and pressure reduction is calculated.
计算了一次蒸汽经减温减压后的火用损失。
The results prove that the initial bonding strength mostly depends on total reduction and heating temperature of al.
结果表明,轧制变形程度和铝层加热温度都是影响复合板初结合强度的主要因素。
Insulation system: adopting germany-made insulation material, radiation reduction temperature, heating time brief loss of diffusion warming faster.
保温系统:采用德国进口保温材料辐射材料加工而成,减低温度扩散损耗,简短加热时间升温快。
For the same kind of coal, with the increase of reburning fuel fraction, temperature had more obvious effect on NO reduction.
对于同一煤种,再燃还原NO效率受温度的影响随再燃燃料比增加而增大。
This paper explores mainly the influence of reduction roasting temperature, time and pulverized coal consumption on content of soluble zinc.
本文主要探讨还原焙烧温度、时间和煤粉用量对可溶锌含量的影响。
The effects of electrode activation condition, current density, electrolyte temperature on electrolytic reduction are discussed.
讨论了电极活化条件、电流密度、电解液温度等因素对电解还原反应的影响。
We find out that the reducing agent has the advantages such as lower reduction temperature, quicker reduction, smaller excessive factor and lower pressure briquette.
发现,与原硅铁还原剂相比,此高效还原剂具有还原温度低、还原速度快、过量系数小、制团压力低等优点。
The kinetic parameters of reduction were determined and apparent effect of temperature on reduction was observed.
测定了还原动力学参数,观察到温度对还原性能有着明显的影响。
For the same kind of coal, the effect of temperature on NO_x reduction gets more pronounced with increasing reburning fuel fraction.
对于同一煤种,再燃还原NO的效果受温度的影响随再燃料比增加而增大。
The effect of impregnation method, impregnation solutions, loading content of Pt, reduction temperature and the carbon pre-treatment on the activity was discussed.
考察了浸渍方法、不同浸渍液、贵金属含量、还原温度、载体的预处理等因素对对氯硝基苯加氢还原反应的影响。
The exergy loss of primary steam after temperature and pressure reduction is calculated.
背压汽轮机和减温减压器都可以用于用汽系统,提供不同等级的蒸汽。
The exergy loss of primary steam after temperature and pressure reduction is calculated.
背压汽轮机和减温减压器都可以用于用汽系统,提供不同等级的蒸汽。
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