Concepts of metamorphism, metamorphic reaction, prograde and retro - metamorphisms.
变质岩的一般概念、变质反应、进变质和退变质。
If accretion takes place in eccentric orbits as well, the rotation will be prograde and of the right order of magnitude.
如果吸积发生在偏心轨道，则自转将是正向的，且快慢也合适。
The sand bodies formed under the mechanism of forced regression are mostly deposited in Qijia-Gulong depression, and they prograde towards the basin gradually.
强制性水退机制作用下形成的砂体大都沉积在沉积滨线坡折带以下的齐家—古龙凹陷内，并逐渐向盆地方向进积迁移。
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