冲洗的

This includes backwashing the sand filters once a week, but the volume of water change is 2800 gallons!

这包括每星期反复冲洗过滤器一次，且更换体积上有2800加仑的水。

At last, the suitable backwashing program of aerobic filter is determined by orthogonal test.

利用正交试验确定了好气滤池合适的反冲洗参数。

Backwashing strategy is another key factor that could affect the biological performance of aerobic filter.

反冲洗是影响好气滤池生物作用的另一个关键因素。

The main content of filtration theory of grainy filtering media consists of filtration mechanism,filtration equation and backwashing mechanism.

粒状滤料过滤理论的主要内容是过滤机理、过滤方程式和反冲洗机理。

System provide protection devices and monitoring instruments, and also have backwashing function ,will remove dirt and other pollutants, small consumption, automatic operation .

系统配置完善的保护装置和监测仪表，且具有反冲洗功能，泥垢等污染物很快被冲走，耗水量少，具全自动功能。

The factors of dissolved oxygen concentration, hydraulic retention time, nutrient, pH value, temperature and backwashing cycle, which affected the treatment efficiency of spent caustic wastewater were investigated.

研究了溶解氧质量浓度、水力停留时间、营养物质、pH值、温度和反冲洗周期等因素对碱渣废水生物处理效果的影响。

Two forces during the backwashing, the sheer stress of water and the frictional stress between the particles of media, were studied and compared with the adhesion of biofilm.

研究了反冲洗过程中的两种颗粒脱附力：水流剪切力和颗粒间摩擦力，并将它们同颗粒附着力进行了比较。

The wastewater was treated by the CBAF process under optimal conditions: hydraulic retention time of 100 min, dissolved oxygen concentration of about 3 mg·L-1 and the backwashing cycle of every 2—3 days.

CBAF工艺净化该废水适宜的操作条件为：水力停留时间100 min，溶解氧浓度3 mg·L-1左右，反冲洗周期2～3 d。

Use: The solvent, colored cinefilm develop pharmaceutical to use as reeling off raw silk from cocoons with polyacrylonitrile fiber, chemical analysis reagent, make plant take off leaf pharmaceutical and herbicide that weed, and rubber industry make rubber deal with pharmaceutical, electroplate industry formulate, plate nickel electroplate liquid.

用作聚丙烯腈纤维抽丝溶剂、彩色电影胶片冲洗剂，化学分析试剂，制造植物脱叶剂和除草的除莠剂，以及橡胶工业作橡胶处理剂、电镀工业配制镀镍电镀液。

Objective:to investigate the effectiveness of presacral space clysis in preventing wound infection of rectal cancer cases with miles operation.

目的：探讨骶前冲洗预防腹会阴联合直肠癌切除术后会阴部伤口感染的效果。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。