The resistance of nitrided J55 casing to sulfide stress cracking (SSC) was studied by C-ring testing and three-point bending testing under different conditions.
用应力环腐蚀试验和三(四)点弯曲试验研究了某J 55(即石油套管)渗氮套管在不同试验条件下的腐蚀行为，并和未渗氮套管的抗腐蚀性进行了比较。
The company now has a perfect testing methods and line equipment, and has the most advanced CNC bending machine, cutting machine welding stainless steel kitchen equipment of the machinery.
公司现具有完善的检测手段及流水线设备，并具有国内外最先进的数控折弯机、裁板机等焊接不锈钢厨房设备的机械。
This paper described the testing principle and method of bending property for the glass yarn on KES-FB and analyzed the effect of yarn count and twist on the bending rigidity of glass yarn.
本文采用KES-FB弯曲测试仪和钭面法对不同号数、加捻和无捻的无碱玻璃纱的弯曲性能进行了测试，并对试验结果进行了分析，探讨了纱线号数和加捻对其弯曲性能的影响。
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