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allow retention
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  “allow retention”译为未确定词的双语例句
     A kind of granular activated carbon,whose granular size is no more than 2mm and specific gravity is 1.54g/cm~3,was used as the support carrier to allow retention of activated sludge within a continuous stirred-tank reactor(CSTR) using molasses wastewater as substrate for bio-hydrogen production.
     在连续流搅拌槽式反应器(CSTR)中填加比重为1.54 g/cm3,粒径小于2mm的多孔物质,以糖蜜废水为底物利用活性污泥制取氢气.
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  相似匹配句对
     The retention rate
     截留率随溶液pH值的升高而升高,能达到99%以上。
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     The Retention of Title
     论所有权保留
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     Allow to make the system strictly;
     严格准入制制度;
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     allow mixed banking operation appropriately.
     允许银行业的适度混业经营。
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  allow retention
Although most of the procedures examined caused major lipid losses, useful fixation procedures that allow retention of cholesterol or 25-hydroxycholesterol in liver and aortic tissues were found and are described here.
      
Insertions into promotor proximal regions of the gene relinquish it from regulation, while insertions into more distal regions allow retention of regulation.
      
Clearly, this would still be an approximation, but would allow retention of the four-generation subunit as the unit of simulation in this work.
      


A kind of granular activated carbon,whose granular size is no more than 2mm and specific gravity is 1.54g/cm~3,was used as the support carrier to allow retention of activated sludge within a continuous stirred-tank reactor(CSTR) using molasses wastewater as substrate for bio-hydrogen production.Continuous operation characteristics and operational controlling strategy of the enhanced continuous bio-hydrogen production system were investigated.It was indicated that,support carriers could expand the activity...

A kind of granular activated carbon,whose granular size is no more than 2mm and specific gravity is 1.54g/cm~3,was used as the support carrier to allow retention of activated sludge within a continuous stirred-tank reactor(CSTR) using molasses wastewater as substrate for bio-hydrogen production.Continuous operation characteristics and operational controlling strategy of the enhanced continuous bio-hydrogen production system were investigated.It was indicated that,support carriers could expand the activity scope of hydrogen production bacteria,make the system fairly stable in response to organic load impact and low pH value(pH<3.8),and maintain high biomass concentration in the reactor at low HRT.The reactor with ethanol-type fermentation achieved an optimal hydrogen production rate of 0.37L/(g·d),while the pH value ranged from 3.8 to 4.4,and the hydrogen content was approximately 40%~57% of biogas.It is effective to inhibit the methanogens by reducing the pH value of the bio-hydrogen production system,consequently accelerate the start-up of the reactor.

在连续流搅拌槽式反应器(CSTR)中填加比重为1.54 g/cm3,粒径小于2mm的多孔物质,以糖蜜废水为底物利用活性污泥制取氢气.考察了填加生物载体后生物制氢反应器连续流稳定运行的系统特性.研究表明,投加生物载体能够扩大产氢细菌的活性范围,提高系统的抗冲击负荷能力和耐低pH值的能力,增加系统稳定性,并且可使系统在低HRT下保持较高的生物量.此连续流生物制氢反应系统的最佳发酵类型为乙醇型发酵,适宜的pH值范围为3.8~4.4,气相中的氢气含量约为40%~57%,最大产氢速率为0.37L/(g.d).降低pH值可抑制厌氧发酵过程中出现的产甲烷菌群,加速产氢反应器的启动.

 
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