查询词典 spontaneous cracking

Accordingly, the accident of sulfide stress corrosion cracking should be taken into account.The SSCC sensitivity and cracking time of 16Mn steel used to make the cold-high pressure segregator and common 16Mn steel in solutions with various H2S contents and pH values, simulated solution and operating solution were investigated by constant strain bend and slow strain rate test.Hydrogen diffusion coefficients of 16Mn steel, 16Mn steel and their welded seams were also tested by the electrolyte hydrogen charged method.Safety evaluation of the cold-high pressure segregator was given with above results.

针对制造过程中由于开孔失误而进行补焊的冷高压分离器在高压、高浓度的H2S环境的使用安全问题，采用了电化学充氢、恒应变和慢拉伸的实验方法，研究了制造冷高压分离器的主体材料16Mn钢和普通的16Mn钢及其焊缝的氢扩散系数，在不同H2S浓度、pH值，模拟冷高压分离器操作环境溶液和实际溶液中的腐蚀规律和硫化氢应力腐蚀开裂敏感性，结合实际腐蚀环境的检测和分析结果，对补焊后的冷高压分离器的使用安全给出了综合评估。

A Material nonlinear finite element analysis for the cast-in-place reinforced concrete hollow slab that occurs from initial loading, cracking, yielding to failing is carried on. The cracking load, ultimate load, the displacement rules and the principal stress distribution rules of the hollow slab under the vertical loads are obtained. A Material nonlinear finite element analysis for the single span hollow flat-plate floor is also carried on. The function of the concealed wide-flat beams is definite by analyzing the principal stress distribution diagram. The calculating results verify the theoretical analysis and give some important conclusions which are great useful to improve the constructing of the new flat-plate floor.

其次对空心板进行了从加荷、开裂、屈服直至破坏的全过程材料非线性有限元计算，得到了空心板在竖向荷载作用下的开裂荷载、极限荷载及位移和应力分布规律；还对单跨无梁楼盖进行了材料非线性有限元计算，通过分析主应力场明确了柱上暗扁梁的作用；有限元计算的结果验证了以上的理论分析并得到了一些重要的结论，对改进现浇空心板无梁楼盖的构造措施有重要的参考价值。

On the basis of this, from the view of material selection, mixture grade, cement dose, the usage of additive and maintenance management, some measures are put forward for preventing cement-stabilized subbase from shrinking cracking, and the targets of reducing the crack odds of subbase and the crack widths, or staying subbase from cracking are obtained.

在此基础上，从材料选择、混合料级配、水泥剂量、外加剂的使用、养护管理等角度提出水泥稳定粒料基层收缩裂缝防治措施，达到减少基层收缩开裂几率、减少裂缝宽度或延缓基层开裂的目的。

Laser welding has a number of other welding methods can not match the performance, which is a good thermal joint anti-cracking ability and capacity to cold cracking.

激光焊接具有一些其他焊接方式所不能比拟的性能，这就是接头良好的抗热裂能力和抗冷裂能力。

If the paint has severe cracking, cracking of paint need to be careful tick away, painted putty, for polishing, painting.

如果漆面已经出现严重开裂，需要把开裂的漆面小心剔掉，涂上原子灰，进行打磨后，喷漆。

One of the necessary conditions of the initial cracking due to thermal fatigue is that the material on high temperature side has been deformed compressively and plastically, which is different from the cracking due to common fatigue.

热疲劳裂纹张开的一个必要条件是高温侧材料在升温过程产生压缩塑性变形，这与普通疲劳裂纹不同。

The fatigue cracking in Ni〓Al SC at room temperature is characterized by the stage Ⅰ crystallographic cracking.

在室温下，Ni〓Al单晶体中的疲劳开裂是第一阶段性质的晶体学开裂。

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Habitancy 办公室在那里那里存在心脏存在在中中部缝被耐储藏使工作作归零校正调整任职在求爱送信对是新树叶向对恰当存在向弄干东西履行刻印刷体字母在中那里在中一大早向表示敬意向自身 a 富人制做被取代向存在制做存在改变变为 a 盘旋什么来向 a 达到高潮在中使裂开下来在上存在那里在附近任职在求爱送信一点本质制造的为所作的努力向清点股票的权利办公室中心部分任职在求爱送信 Yan 使裂开向被寄送由转的缝被任职在求爱的补充自身脸存在向那里价格是对的价值注意向存在对的价值向表示敬意向存在向留下上公共厕所空间坚定支持住从里面右手击球手那个派别从里面的办公室向去那里履行切肉印刷体手写字刻印刷体字母各种各样的打击存在度向接受者使裂开下来在上坚定支持住从里面办公室在邻近的那里向表示敬意向派别标志的 Kaiate 儿子领班

Study result suggest: The change of stock in RFCCU directly affect gasoline content. Gasoline content can be reduced through increasing the equilibrium activity of catalyst, controlling reaction level, increasing recirculating rate of gasoline and stability of gasoline level. Conclusions drawn from experiment is that optimization of operating condition has great effect on lowering olefine content of gasoline which can be reduced from 60% to 50%.Reducing reaction temperature is useful for lowering olefine content of gasoline, when the reaction temperature is raised, thermal cracking rate is higher than catalytic cracking rate, so that olefine content is increased. Raising catalyst-to-oil ratio is good for lowering olefine content. With conversion rate increased, the yield of LPG and coke is raised, the yield of gasoline is increased firstly and then decreased slightly, hydrogen transfer index is increased, so the olefine content is decreased.

研究结果表明：催化裂化装置的原料的变化直接影响到催化汽油的烯烃含量；可以通过优化催化装置的操作条件来降低催化汽油中的烯烃含量，其中通过提高催化剂平衡活性、控制反应深度、增加汽油回炼量、汽油深度稳定可以降低催化汽油烯烃含量，优化工艺条件对降低催化汽油烯烃含量有较大作用，汽油烯烃含量由60％降至50％左右；降低反应温度有利于降低催化汽油的烯烃含量，当反应温度的提高，热裂化反应速度提高的幅度大于催化裂化反应速度提高的幅度，汽油烯烃含量增加；剂油比的提高有利于降低催化汽油的烯烃含量，转化率提高，液化气产率提高，汽油收率先增加后略有下降，焦炭产率增加，氢转移反应指数提高，汽油烯烃含量下降；反应时间对产品分布及汽油烯烃含量有影响，增加提升管反应时间，液化汽、汽油产率提高，干气和焦炭产率增加。

The catalytic transformation pathway can change to decrease the yield of hydrogen and yield methyl-contained sulfides such as methyl mercaptan, dimethyl sulfide and dimethyl disulfide, but overlarge concentration of methanol would holdback the transformation of isobutyl mercaptan. The transformation of isobutyl mercaptan was favorable if the volume ratio of methanol and benzene was 0.2.The addition of methanol assume certain effect on the catalytic cracking of di-n-butyl sulfide in solvent benzene but without changing the cracking reaction mechanism of di-n-butyl sulfide.

甲醇也可以使异丁硫醇的催化转化路径发生改变降低硫化氢的产率，生成甲硫醇、甲硫醚及二甲基二硫化物等含甲基硫化物，但甲醇的浓度过高会抑制异丁硫醇的转化，在反应体系中当甲醇的体积占到溶剂苯体积的20%时对异丁硫醇的转化较为有利；甲醇的添加对丁硫醚在溶剂苯中的催化裂化有一定影响，但没有改变丁硫醚的裂解反应历程。

Connectors are lines that can be anchored to particular places, called glue points , on the graphic object.

连接符，可固定在图形对象的特定的地方的线条。

Another way of putting it, too many agents have a say in each other's work, and bureaucratic rigor mortis sets in.

另一种表达是，太多的作用物在彼此的工作里都有话语权，官僚的僵尸开始抬头。