20l

Separation and Reuse Technique for Rejected Nitric Acid 20L

报废硝酸-20L分离再用技术研究

20L Heat pipe bioreactor is exploited using high performance heat transfer element-heat pipe . It has many advantages such as uniformity of temperature profile , efficiency of heat transfer etc.

将高性能的传热元件热管应用于生物反应器开发出来的20L热管生物反应器具有反应器的温度分布均匀、传热效率高等优点。

Reliable and simple method for viral recovery from sewage had been established , with which more than 80 % of virus could be recovered from large volume of 20L sewage . 2 .

综上所述，我们得出了如下结论：1.建立并完善了污水中病毒的浓集方法，可以使大体积（20L）污水水样中的病毒回收率达到80%以上。

The effect of Purification on these two radioactivity-contaminated water sources by using the purifier has shown that 99 % ( 20L ) of the intensity of the radioactivity has been purified .

该净水器对两个水源中放射性污染物的净化效果表明，对试验水样中污染物的放射性强度均能净化（20L）达到99%以上；

The result indicates that the towel finished with cellulase has good effect under the condition of the concentration of cellulase 45 mL / 20L , pH value 4.8 , temperature 50 ℃, time 90 minutes .

结果表明：纤维素酶浓度45mL/20L、pH值4.8、温度50℃、时间90min时，纤维素酶整理毛巾织物效果最佳。

The separation and reuse techniques for rejected oxidant nitric acid 20L were studied . The distillation method with Mg ( NO3 ) 2 dehydration was fixed to deal with the rejected nitric acid 20L .

对报废氧化剂硝酸-20L分离再用技术进行了研究，确定了报废氧化剂的处理方法为硝酸镁精馏脱水法。

Before the appearance of Chinese academic education on the early stage of 20l century , as an important way of inheriting and developing Chinese art , rich in conventional artistic education resources , continuing an age-old respectable and deep conventional culture of the Chinese nation .

20世纪初，中国的现代学堂教育出现之前，丰富的传统美术教育资源作为中国艺术得以承袭发扬的重要方式，沿续了中华民族千百年来古老而深厚的传统文化。

The equipments of plasma arc spraying can not work normally when use a flux of work gas less than 20L / min. The plasma arc blaze will be cooled down and the deposit speed will reduce when use a excessive flux of work gas .

等离子弧热喷涂的工作气体流量不宜过低，当低于20L／min实验所用的等离子设备将无法正常工作，相反气体流量太大将会冷却等离子弧焰流，导致沉积率显著降低。

In the condition of operation pressure 1.5 × 10 ~ 6Pa and concentrated water flux 20l / h , the mem - brane had 93 % rejection and 0.8m ~ 3 / m ~ 2 · d product rate for tap water .

该膜在操作压力为1.5×10~6Pa，浓缩水回流量为20l/h，进料液为自来水的条件下，脱盐率为93%，水通量为0.8m~3/m~2·d。

The result indicates that absorptivity could amount to 85.3 % at a gas flow rate of 2m3 / h , liquid gas ratio of 20L / m3 and high gravity factor of 90.After double stage treatment , the nitrogen oxides tail gas reached the state discharging standards .

试验结果表明，在进气量2m3/h、液气比20L/m3和超重力因子为90的条件下，吸收率达到85.3%，采用两级串联吸收后，氮氧化物尾气达到了国家排放标准。

Draught tube airlift bioreactors designed for plant cell suspension cultures were constructed and tested for Glycyrrhiza uralensis cell culture . The bioreactors had total volumes of 7L , 9L and 25L , with working volumes of 4.5L , 6L and 20L , respectively .

自行设计研制了7L，9L及25L内循环气升式生物反应器，并应用于甘草细胞的放大培养研究。