Acoustic-emission techniques have been used to determine the rate of cracking of high strength steel due to hydrogen embrittlement.
声发射技术已被用来确定高强钢因氢脆而开裂的速率。
The paper describes that new type inject steam technology can reduce coke precursor, resulting in operation rate of cracking furnace over 96.8 % .
采用新型注汽技术改造，降低结焦先兆物，使裂解炉开工率提高到96.8％以上。
Based on the ration experiment and practical engineering of DFRC concrete, this kind of application can reduce the rate of concrete cracking and increase the strength against momentum.
通过对杜拉纤维混凝土配合比试验和工程实践证明，在混凝土中掺加杜拉纤维后，可以减少混凝土的裂缝，而且有效提高抗冲能力。
The effect of carbon, molybdenum and rare earths on hot cracking susceptibility of austenitic stainless steel welds was studied with continuously variable deformation rate cracking test (VDR) method.
应用变形速率连续可变式热裂纹试验方法(VDR法)研究了碳、钼和稀土元素对奥氏体不锈钢焊缝热裂敏感性的影响。
It is found that significant radial variations of cracking temperature and cracking reaction rate exist due to boundary layer near the inner wall.
但是管内近壁面处由于存在边界层，始终存在着明显的径向温差；近管壁处始终是裂解的高速率区，副反应也主要发生在管壁区。
The threshold stress and fracture stress of hydrogen-induced cracking of X80 pipeline steel are studied by constant load test and slow stain rate test.
采用恒载荷和慢应变速率动态拉伸实验方法，测定了X80管道钢在不同充氢条件下的氢致开裂门槛应力和断裂应力。
Then the authors analyse the effect of initial temperature and cooling rate on thermal stress and the low temperature cracking performance of different asphalt cement.
然后探讨了初始温度和降温速率等对温度应力的影响以及不同材料的低温抗裂性能。
We normally use the punch or hydraulic machine to expand the steel tube, but since the impetus and velocity is difficult to control, the cracking rate of expanding the steel tube reaches to over 10%.
钢管扩管通常采用冲床或液压机来加工，但由于冲力和速度难以控制，扩管破裂率达10%以上。
The probability of cracking is mostly related to the thickness of the tape and rate of drying.
坯体开裂的可能性主要与坯体厚度和干燥速率有关。
The interaction between mechanics and electrochemistry during the stress corrosion cracking (SCC) of 7075 aluminum alloy was studied using slow strain rate tension (SSRT) technique.
用慢应变速率拉伸(SSRT)技术研究了7075铝合金在应力腐蚀过程中的力学与电化学交互作用。
The results showed that high cooling rate of hot rolled billet resulted in abnormal microstructure formation and high hardness, which caused shear cracking.
结果表明，原材料热轧后冷速过快，造成组织异常，硬度偏高，导致了剪切开裂。
Stress corrosion cracking of an X60 pipeline steel in soil containing water has been investigated using slow strain rate test.
用光滑试样慢应变速率拉伸法研究了X60管线钢在含水土壤中的应力腐蚀。
The effect of different wind-speeds on the frozen cracking rate, edible quality and deep-frozen curve of deep-frozen dumpling, leek and pork for fillings were studied.
以韭菜和鲜猪肉为馅料，研究了不同风速对速冻水饺冻裂率、食用品质及速冻曲线的影响。
The effects of mineral nutrition on fruit cracking rate of Litchi chinensis are studied in this paper through determining the mineral nutrients in the leaves and pericarp of lychee and in soil.
通过对糯米糍荔枝叶片、果皮、土壤中矿质元素含量的研究，探讨矿质营养对荔枝裂果率的影响。
The transverse cracking rate of the Nb containing slab is far greater than that of other steel grade since the former contains Nb and other cracking susceptive elements.
含铌钢由于含有铌等裂纹敏感性元素，其铸坯横裂纹发生率远远大于其它钢种。
The present work shows that the nonuniform thickness of solidified skin of slab created by the nonuniform cooling rate of the skin in the crystallizer is main cause for slab surface cracking.
试验结果得知，坯壳在结晶器内冷却不均，使坯壳凝固层厚薄不同，是铸坯产生表面裂纹的主要原因。
The stress corrosion cracking(SCC)behavior of X70 steel welded joint was investigated in a near-neutral pH solution by fluctuant slow strain rate test(F-SSRT).
分析温度、应力（应变）和慢应变率等因素对极化曲线的影响，并讨论温度、应力和慢应变率对管道钢发生应力腐蚀开裂的驱动作用。
The result shows that the cracking load and the ultimate load are all increased to different extent, the rate of crack propagation has an obvious betterment and the seismic mechanism is also improved.
试验结果表明，芳纶纤维加固后的砖砌体的开裂荷载和极限荷载均有不同程度的提高，延性及裂缝的开展有明显的改善，抗震性能提高。
The catalyst of the invention is used for catalytic cracking of heavy oil, the conversion rate is high, the yield of gasoline is high and the coke yield is low.
本发明催化剂用于重油催化裂化，转化率高，汽油产率高，焦炭产率低。
The catalyst of the invention is used for catalytic cracking of heavy oil, the conversion rate is high, the yield of gasoline is high and the coke yield is low.
本发明催化剂用于重油催化裂化，转化率高，汽油产率高，焦炭产率低。
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