同时探讨了煤层变形，即糜棱化作用发生时期及形成条件。
The stage and temperature-pressure condition of deformation of coal are also discussed in…
同一地点同一层土在不同时期的变形特点也不尽相同。
Even the same layers in the same location have different features in different stage.
同一地点同一层土在不同时期的变形特点也不尽相同。
Even the same layers in the same location have different features in different stage.
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