Fatigue mechanism of girder of bridge crane 桥式起重机主梁结构疲劳机理分析
A software system for acquisition , recognition and evaluation of the driver ' s face image is developed to realize the perclos - based recognition algorithms of motor driver fatigue mentioned above 通过对驾驶疲劳机理的研究,发现驾驶疲劳一般与驾驶时刻,睡眠历史,身体状况,天气情况等因素有关。
It is , therefore , of academical and practical importance to investigate and to clarify the electrical fatigue mechanism of ferroelectrics by using on - line or in - situ technologies 采用现场或原位技术观测电疲劳过程中电畴的变化对研究和探明这类材料的电疲劳机理具有重大的理论指导意义和实际应用价值。
4 , the flexural fatigue behavior of concrete is improved effectively though mixed steel fibers and polypropylene fibers . 5 , flexural fatigue mechanism was analyzed . the improving and damaging mechanism were studied 5 、对层布式混杂纤维混凝土的抗折疲劳机理进行了分析,初步探讨了混杂纤维混凝土的纤维增强机理及破坏机理。
Sio _ 2 nano particle has anti - rubs function is because sio _ 2 nano particle is very small and has the massive hydroxy , can forms the adsorption thin film within rub surface . so protected the solid surface improve the grease resistance to wear 纳米sio _ 2的抗疲劳机理是粒子很小且具有大量的羟基,可以在摩擦副间形成吸附薄膜,因而保护了固体表面,提高了润滑脂的耐磨性。