表层料层
Surface material layer
以上为机器翻译结果，长、整句建议使用 人工翻译 。
该滤料的特点在于表层采用超细纤维层，滤料结构形成的流体通道呈现为前窄后宽。
The characteristics of this filter media are that the surface layer adopts microfibre and that the hydro-channels of the filter media's structure are narrow in the front and wide in the back.
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