The characteristics of filter between no precoat and precoat were compared.

介绍了江苏省内精密使用情况,对比了不预涂和预涂特点。

Includes AC battery recharger, charging stand, pipette holder with safety valve, and filter.

包括交流电池充电，充电座，移液 架（带安全阀，等）。

The existing problem in operation of siphonal sand filter and innovation were introduced.

介绍了虹吸式砂在运行程中出现问题改造措施。

A liquid filters through a strainer,into the receptacle beneath.

液体经流入下面容。

When  heavy  dirt  and  sludge  accumulate  on  the suction strainer, the pump soon begins to cavitate.

但由于粗是装在油箱内部，所粗维护常常被忽视。

Objective To study the effects of a new device of brain protection-carotid artery filtrum on hemorheological properties of carotidartery blood.

目研究一种新型颈动脉保护装置对颈动脉血液流变学影响。

The filter integrates two stages of coarse filters and one stage of fine filter, as well as a de-dust device by exhaust gas vacuation.

该清由两级粗和一级精集合而成，并带有废气引射抽尘装置。

Backwashingable filter can blow down at any moment and backflush the filter without pumping off,which improves the application effect,reduces the cost and elongate the working life.

可反清洗在不停泵情况下随时排污和对层进行反清洗作业,提高了使用效果,降低了使用成本,延长了使用寿命。

A strainer is recommended to be installed ahead of the backflow preventer to prevent the fouling of the check assembly and resulting spillage from the valve during repressurization.

建议在防回流阀前安装一个，防止由于止回阀总成受到污染而导致这种阀门在再增压期间产生泄漏或溢出。