upstream,upflow是什么意思

用法例句

Study on the advanced treatment of secondary effluent of textile wastewater by up-flow aerated biological activated carbon(BAC) method was carried out.

采用上流式曝气生物活性炭法处理碱减量印染废水二级生物处理出水,利用TTC-脱氢酶活性(DHA)法监测反应器内DHA生物活性分布。

This paper studies on the advanced treatment of secondary effluent of textile wastewater by up-flow aerated Biological Activated Carbon method.

采用上流式生物活性炭滤池(UBACF)深度处理纺织废水,讨论了滤池内附着生物膜的测定方法,研究了滤池沿程截留生物膜与附着生物膜活性的大小与变化规律。

Because the gas-liquid flow state in up-flow reactor is different from that in fixed-bed residue hydrotreating reactor and the guard catalyst of up-flow residue hydrotreating reactor possesses special pore structure and metal content.

由于上流式反应器内气液流动状态不同于固定床渣油加氢处理,而且上流式渣油加氢处理保护性催化剂具有特殊的孔结构和金属组成,对催化剂的预硫化过程可能具有一定的影响。

Using the data of case interviews at Shenzhen,Suzhou,Beijing,and Chengdu,the four cities of China,this article analyzes the migrant worker s status attainment and main approaches of upward mobility at cities.

在城市生活中,农民工主要通过教育和技能实现向上流动,而逆向流动则是他们面临城市社会排斥的一种无奈选择。