FFU have primary and hepa two pole filter net.

FFU设有初、高效两极过滤网.

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In the nowadays world, does not have intermediate zone, only then two - pole.

在现今世界中, 不存在中间地带, 只有两极.

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The most jeopardize is causes theand south the two - pole ice melting, causes the sea level rising.

最主要的危害就是导致南北两极的冰盖融化, 使海平面上升.

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The two - pole switch has a slightly different input isolation specification than a one - pole switch.

和 单刀 开关相比,双刀开关在输入隔离技术指标方面稍有不同.

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The law having designed two pole pulse, the effect having avoided the polarization effect having effect.

设计了脉冲法, 有效的回避了极化效应的影响.

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