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Second, the filter bubble is invisible.
第二，过滤器泡泡是无形的。
youdao
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The product is white or milk white bubble-shaped ceramic filter plate.
本产品为白色或奶白色的泡沫状陶瓷过滤板。
youdao
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The product is white or milk white bubble-shaped ceramic filter plate.
本产品为白色或奶白色的泡沫状陶瓷过滤板。
youdao