This paper studies the hydration sloughing mechanism of three kinds of hard and brittle shales of Shahejie formation in Gangdong oilfield.
研究了大港油田港东地区沙河街地层三种硬脆性泥页岩的水化坍塌机理。
Objective to study the tongue moving types in Han nationality in the western part of Gangdong to provide inference for genetics of human anthropology.
目的对粤西汉族舌运动类型进行研究，为人类群体遗传学研究提供资料。
Objective to study the tongue moving types in Han nationality in the western part of Gangdong to provide inference for genetics of human anthropology.
目的对粤西汉族舌运动类型进行研究，为人类群体遗传学研究提供资料。
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