We study how to control the solid grain, microorganism and water quality of tap water, and put the research about the solid grain contamination into emphasis.
本文对自来水固体颗粒污染物、微生物和硬度等三种主要污染物的控制方法进行了研究，其中着重研究了固体颗粒污染物的控制理论和方法。
Many international brands are expected to attend the fair to develop a solid presence and tap better business opportunities in Bangladesh.
许多国际品牌有望参加此次展会来建立坚实的存在以及利用孟加拉国更好的商业机会。
Many international brands are expected to attend the fair to develop a solid presence and tap better business opportunities in Bangladesh.
许多国际品牌有望参加此次展会来建立坚实的存在以及利用孟加拉国更好的商业机会。
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