The fault movement and the direction of principal stresses may be determined by considering the relationship between the different secondary structures and en-echelon patterns.
因此可以通过这些次级构造和雁列类型的关系,来判断断层的运动和主应力方向。
Human, whose basic characters of vital movement are shown by his substance metabolism processes, are the principal of aerobic gymnastics.
健美操运动的主体是人,人体的物质代谢是生命活动的基本特征。
Significant fluctuation with a time-scale of several years exist in the crustal movement, which might be a principal feature for the continental crustal movement;
地壳运动存在着数年尺度的较明显的波动性,这可能是大陆地壳运动的一个主要特征;
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