base on L‘Hospital rule,the velocity and speed ratio of planer mechanism are analyzed when they are on metamorphous condition;
达法则为理论基础,对平面机处于蜕变时的速度和速度进行分析;
base on L‘Hospital rule,the velocity and speed ratio of planer mechanism are analyzed when they are on metamorphous condition;
达法则为理论基础,对平面机处于蜕变时的速度和速度进行分析;
ynamic metamorphous features and evolutionary process of tectonic coal have been studied by X-ray diffraction and electron spin resonance(ESR).
采用X射线衍射分析、电子顺磁共振等方法研究煤的动力变质作用特征和演化规律。
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