By means of lots of lightning impulse tests, power frequency arc tests as well as bend loading tests, a kind of clamping post composite insulators with matching insulation hoods is developed.
通过大量的雷电冲击放电试验、工频电弧试验和弯曲负荷试验等试验研究，研制出了一种放电箝位柱式复合绝缘子和配套的绝缘罩。
Methods: the osteoblast-like cell MG-63 were stimulated with different amplitude by four-point-bend loading device, and the different proliferative index after tension-stress load were studied.
方法：采用四点弯曲细胞力学加载仪对成骨样细胞MG - 6 3分别以不同强度的张应力进行力学刺激，并对其受力后的增殖状态进行了研究。
By strengthening under low amplitude loading, bend fatigue strength and life of gear teeth can be increased by 3.97 and 109 percents, respectively.
经过低幅载荷强化，该齿轮轮齿的弯曲疲劳强度提高了3.97%，弯曲疲劳寿命提高了109%。
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