II there are two aspects of representation about learning burnout, natural dimension and social dimension.
大学生学习倦怠的表现有自然维度及社会维度两方面。
The burnout and wear procedure of cross slide way of 4L-20/9-II coke-oven gas compressor was presented and the burnout and wear causes were seriously analyzed.
阐述了4L-20/9-Ⅱ型焦炉煤气压缩机十字头滑道频繁烧研的过程，并对烧研原因进行了认真分析。
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