I apply the minimum principle to the analysis of optimum temperature distribution on the basis of mathematic model for acetic acid cracking at high temperature.
依据醋酸高温裂化数学模型，应用最小值原理分析了裂化温度的最优分布。
Choose a lip balm with natural oils (but without any salicylic acid), and spread it all the way to the corners and rim, where cracking occurs.
选择含有天然油脂(不含水杨酸)的润唇膏涂抹最容易干裂的嘴唇边缘和嘴角部位。
Nitric acid - helps heal bleeding and cracking.
硝酸—愈合流血处和开裂处。
The preparation of sebacic acid from castor oil by microwave cracking under the condition of solvent is reported.
本文报道了以蓖麻油为原料在有机溶剂条件下经微波裂解法制备癸二酸的工艺条件研究。
The presence of the greater residual tensile stress induces the stress corrosion cracking in the course of the acid pickling.
其原因是磁屏表面存在较大的切向拉应力，从而在酸洗过程中产生了应力腐蚀开裂。
The results showed that the cracking mechanism ratio (CMR) was distinctly dissimilar over different types of catalysts and was correlated with strong Brnsted acid and weak Brnsted acid.
结果表明，不同类型的酸性催化剂，其裂化机理比率(CMR)明显不同，并与强b酸量和弱b酸量有关。
The results showed that the oligomerization, cracking, skeletal isomerization and hydrogen transfer reaction of 1-heptene occurred on acid catalysts.
结果表明，庚烯-1在酸性催化剂上会发生齐聚、裂化、骨架异构和氢转移等反应；在较高转化率下，甚至会发生四聚反应。
The results indicate that acid and alkali catalysts can increase the tar cracking reaction speed and reduce the activation energy due to the activated center.
结果表明，酸性和碱性催化剂由于活性中心的存在，加快了反应速度和降低了反应活化能。
LCO promoter having proper acid sites and stable medium pore distributions by adopting the pore improving method was developed for heavy oil catalytic cracking.
采用添加孔改进剂的方法，开发了具有适当的酸中心分布、稳定的中孔分布的多产柴油重油裂化助剂。
Enhancement of the quantity of strong acid sites is the trend in development of C4-olefins cracking catalysts.
尽可能提高催化剂表面强酸的 酸量是C4烯烃催化裂解制丙烯反应催化剂的研制方向。
Brittle fracture is a stress corrosion cracking phenomenon which occurs in high voltage composite insulators. Previous studies all focused on the source of the "corrosion" medium, e. g. the acid.
脆断是高电压复合绝缘子发生的应力腐蚀断裂现象，国内外的研究基本集中在“腐蚀”介质酸的来源上。
Abrasion and corrosion of heating surface, superheater tube cracking and weld leakage are the main cause of waste heat boiler breakdown in sulphuric acid plant.
硫酸废热锅炉故障主要是由受热面管子的磨损、受热面的腐蚀、过热器爆管及焊缝漏水等引起的。
Effect of temperature on gasoline olefins cracking reaction over acid catalysts in fixed fluidized bed(FFB)reactor was studied and 1-heptene was used as model compound.
以1-庚烯为模型化合物，在小型固定流化床上研究了反应温度对汽油烯烃在酸性催化剂上反应的影响。
This alloy retards stress corrosion cracking and has improved resistance to sulfuric acid. Alloy 20 finds wide use in all phases of chemical processing.
这种合金能够缓解金属超应力引起的腐蚀所造成的断裂，其抗硫酸腐蚀的性能也有很大的改善。合金20在化工生产过程中具有广泛的应用。
Two particular corrosion types, i. e. dew point corrosion of sulfuric acid and polythionic acid stress corrosion cracking were also introduced from the aspects of corrosion m…
同时对硫酸露点腐蚀和连多硫酸应力腐蚀开裂两种特殊的腐蚀类型，也从腐蚀机理和防腐蚀措施方面作了介绍。
Organic acid and CO2, generated from thermal degradation of source rocks and thermo-catalytic cracking of hydrocarbons in reservoirs, destabilized and dissolved the carbonates at depth.
烃源岩的热降解和储层中的烃类热催化裂解，生成有机酸和二氧化碳，引起深层碳酸盐岩发生溶解作用。
Organic acid and CO2, generated from thermal degradation of source rocks and thermo-catalytic cracking of hydrocarbons in reservoirs, destabilized and dissolved the carbonates at depth.
烃源岩的热降解和储层中的烃类热催化裂解，生成有机酸和二氧化碳，引起深层碳酸盐岩发生溶解作用。
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