因此为了保护膜层，在过滤含有磨损性物质的料液时，必须对料液通过初过滤、离心分离或沉降等方法进行预处理。
Therefore, filtering of abrasive matter required pre-treatment stages such as pre-filtration, centrifuging, or sedimentation in order to protect the membrane.
ffu设有初、高效两极过滤网。
轻便的板式结构，优质的聚酯合成纤维过滤材料，初阻力低，防火性好。
The light panel structure, the high quality PET synthetic fiber filter material is with features of low initial pressure, good fire-proof function.
公司主要产品有初效过滤器、中效过滤器、高效过滤器，以及活性碳空气过滤器。
Company's main products are the early effect filter, in effect filter, high efficiency filters and activated carbon air filter.
70年代初，美国首先实现微孔滤膜商品化，为精密过滤提供理想的过滤介质。
Initial stage of 70's, commercial of micro filtration Membrane achieved in America at first, which provide an ideal filter Membrane for precision filtration.
检查MAU的初中效过滤器，当压差报警时对初效过滤器进行清洁或更换；
初滤器过滤杂质的同时，部分滤芯可反冲洗，延长初滤器滤芯的使用寿命，节约运行费用。
While the primary filter works, some filter cores can be counter rinsed, as a result, the service life of the filter core can be prolonged and the operation cost can be saved.
初效过滤、高级顶棉过滤，地台玻璃丝棉过滤，活性碳过滤，三层活性碳。
Filtration system: Early effect filter, advanced cotton, glass cotton platform filter, activated carbon filter, activated carbon on three floors.
FFU层流罩是一种自带风机的空气过滤净化单元，它由初效过滤器、风机、高效过滤器和静压箱组成。
FFU laminar flow unit is an air filtering and purifying unit with its own blower fan, it comprises of primary efficiency filter, blower fan, high efficiency filter and static pressure box.
FFU层流罩是一种自带风机的空气过滤净化单元，它由初效过滤器、风机、高效过滤器和静压箱组成。
FFU laminar flow unit is an air filtering and purifying unit with its own blower fan, it comprises of primary efficiency filter, blower fan, high efficiency filter and static pressure box.
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