- 滤: filter; strain
- 膜: membrane
- 孔隙: small opening; hole; pore; a ...
- 率: rate; ratio; proportion
- 孔隙率: absolute porosity; air porosity; air voids; factor of porosity; fractional void; percent of void; percentage of voids; poriness; porosity factor; void content; void factor; voidage; voids ratio
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