A crack surface displacement of four-point-bend specimen under three types of loading is studied in this paper.
研究了四点弯曲型试件在各种类型载荷作用下的裂纹面位移，并考虑了裂纹尖端塑性区对它的影响。
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。
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