Can only slow decomposition in the soil, the release of active substances.
只能在土壤中缓慢分解、释放活性物质。
The object of this research was to get some natural active substances from algae.
本研究的目的是为了从海藻中获得天然抗病活性物质。
The object of this research was to get some natural active substances from algae.
本研究的目的是为了从海藻中获得天然抗病活性物质。
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