1. filtration equipment of wastewater 
   废水过滤设施
2. type genus of the Chlamydomonadaceae; solitary doubly-flagellated plant-like algae common in fresh water and damp soil; multiply freely; often a pest around filtration plants. 
   衣滴虫科的模式属；生长在淡水或潮湿土壤中的植物状生有双鞭毛的喜独居海藻；繁殖自由；常常对于筛选植物是有害物。
3. Water can be purified by filtration through sand. 
   水通过沙滤可以变清。
4. soil and soil mass 
   土和土体
5. Relevant experts, agencies and investment banks will be invited to make project filtration,technology evaluation,market analysis and offer financial packagings.  
   邀请有关专家、中介机构和投资银行为技术交易提供项目筛癣技术评估、市场分析及融资包装等服务。

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• 1. 土壤渗滤
  soil fertility map 土壤肥力图...soil filtration 土壤渗滤...soil fines 土的细粒部分
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