采用聚乙二醇（PEG）先与钙反应后，再与磷源溶液反应，在低温环境中制得无定形磷酸钙。
A stable amorphous calcium phosphate (ACP) was prepared by a wet chemical method at a low temperature in the presence of poly(ethylene glycol) (PEG).
除去土壤游离氧化铁和无定形氧化铁后，土壤对磷的吸持容量显著下降。
After removing free Fe oxides and amorphous Fe oxides from the soil, the phosphate sorption capacity of the soil decreases markedly.
镀层由无定形镍磷合金构成。
镀层由无定形镍磷合金构成。
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