The FCC catalyst which took HAY zeolite as active component got a good result in the heavy oil cracking test.
由该分子筛制备的FCC催化剂用于重油裂解试验，取得良好结果。
On the basis of the principles and structures of the cold cracking implant testing machine, the study on the implant equipment of reheat cracking test is reviewed in this paper.
在深入分析冷裂纹插销试验机的原理和结构的基础上，本文进行了插销式再热裂纹试验装置的研究工作。
The cold cracking sensibility of high tensile pipeline-steel was studied by Ygroove cracking test using seven kinds of high cellulose electrode of vertical down position welding.
采用七种高纤维素型立向下电焊条，通过斜y坡口裂纹实验，对高强管线钢的冷裂敏感性进行实验研究。
Cracking resistance of ultra-low cabon Cu-bearing age-hardening steels was studied in this paper by computing, maximum hardness in weld heat-affected zone test and Y-groove cracking test.
采用理论计算、热影响区最高硬度试验和小铁研试验方法研究了超低碳含铜时效钢的抗裂性。
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。
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。
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