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| 1. | anti-interference filter |
| 抗干扰滤波器 |
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| 2. | anti-vignetting filter |
| 消除黑角滤片 |
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| 3. | anti alias filter |
| 去假频滤波器 |
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| 4. | anti bias filter |
| 去偏滤波 |
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| 5. | The body of filter adopts anti-block unidirection press valve, avoiding from the pump's breakdown when |
| ☆ 过滤器本体采用防堵单向压力式阀门，避免了管道，纸芯堵塞后闷泵现象，有效防止水泵空转，损坏电机。 |
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