The Delta Songs has richful genres and vivid contents. During the process of generation, spread and evolution, it has absorbed, melted and accumulated richful culture of the Yellow River Delta.
黄河三角洲民歌体裁众多、内容丰富，在其产生、流传和演变的过程中，不断吸纳、融合和积淀了丰厚的黄河三角洲地方文化。
The growth curve and generation times of Tetrahymena thermophila BF5 are used to study the water quality of the Yellow River in Lanzhou City with five samples.
在黄河兰州市区段采集水样，利用嗜热四膜虫（Tetrahymena thermophila）BF5的生长曲线和世代时间作为指标来评价水质。
The growth curve and generation times of Tetrahymena thermophila BF5 are used to study the water quality of the Yellow River in Lanzhou City with five samples.
在黄河兰州市区段采集水样，利用嗜热四膜虫（Tetrahymena thermophila）BF5的生长曲线和世代时间作为指标来评价水质。
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