用光学、扫描电子显微镜及显微硬度计，研究了低碳钢在高频弯曲疲劳过程中的形变及断裂。
The deformation and fracture of mild steel under high frequency bending fatigue has been studied by optical microscope, scanning electron microscope and microhardness determination.
电子双数显拉簧、压簧、扭簧测试仪器、投影仪、硬度计、盐雾测试机等。
The company provides electronic double-digital display tension spring, compression spring, torsion spring testing device, prijector, sclerometer, and salt spray tester.
利用光学金相显微镜、显微硬度计、电子探针及X射线衍射分析仪初步探索其中温回火转变过程。
Optical metallographic microscope, micro-hardness tester, electron microprobe and X-ray diffraction analysis were applied to explore the process of intermediate temperature tempering transformation.
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