The PaperPhone lets people make calls by bending the epaper. telegraph made from electronic paper has been demonstrated by researchers in Canada.
加拿大研究人员日前研发了一款使用电子纸制作的智能“纸手机”。
Stiffness: It is a measure of the bending strength of paper and board.
挺度：挺度是衡量纸和纸板耐弯曲的强度性能。
This paper describes the performance test, contact fatigue strength test and bending fatigue strength test on the gear reducer of involute point contact Ferrographical analysis is made.
本文对渐开线点啮合齿轮减速器进行了性能试验、接触疲劳强度和弯曲疲劳强度试验，同时还进行了铁谱分析。
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