preliminary filter

In order to improve the compactness and simplify the structure of diesel particulate bag filters, a preliminary design and test of a flat shaped bag filter was tried, and have proved that it is unsuitable to adopt flat shaped bag in diesel particulate bag filter design.

为缩小柴油机微粒袋滤器的体积、简化其结构，木文进行了扁袋袋滤器的初步设计和试验，证明在柴油机微粒袋滤器设计中采用扁袋是不合适的。

Preliminary Study on Rating Suction Pressure of Filter Paper

滤纸吸力率定的初步研究

If the ClearQuest query contains prompts, you must perform a preliminary step to view the statement: Copy the original query to a temporary folder, and replace the dynamic filter with a static filter.

如果ClearQuest查询包含了命令行，那么您必须执行查看声明的前述步骤：将原始的查询复制到临时的文件夹之中，并使用动态的查询来替代动态的筛选。

A preliminary study on chemical clogging of nonwoven geotextile filter in Wushan tailings fill dam

武山尾矿坝无纺土工织物滤层化学淤堵问题初探

This dissertation put forward a preliminary plan that an online uninterruptible power system has active-filter function with DSP control. The system has active-filter and UPS functions.

本文提出一种将电力有源滤波技术APF与不间断电源相结合的UPS电源系统解决方案，此系统兼有APF和UPS功能。