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1·The crude touchwood carrier was suitable for the microorganisms to grow on.

天然朽木填料适合微生物生长。

2·The crude touchwood carrier with a coarse surfacewas of great absorption so that it was suitable for the microorganisms to grow on and it wasable to adapt to variable volumetric loading well.

天然朽木填料表面粗糙，具有较好的吸附性能，适合微生物生长，抗冲击负荷能力强。