metamorphous

base on L‘Hospital rule,the velocity and speed ratio of planer mechanism are analyzed when they are on metamorphous condition;

以洛达法则为理论基础,对平面机构处于蜕时的速度和速度进行了分析;

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了构造煤的动力质作用特征和演化规律。