Study on Strata Mechanical Structure and Support Adaptability of Shallow Seam;
浅埋藏似能保留具白垩状结构的孔隙。
To study the situation of left-behind children′s mental health, family intimacy and adaptability.
目的研究留守儿童心理健康与家庭亲密度和适应性的状况及两者的相关性。
To study the situation of left-behind children′s mental health, family intimacy and adaptability.
目的研究留守儿童心理健康与家庭亲密度和适应性的状况及两者的相关性。
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