phosphatic guano
... 秘鲁海鸟粪 Peruvian guano 磷质海鸟粪 Phosphatic guano 海鸟粪鸟类 guano ...
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自然产生的磷酸盐中以磷酸三钙最为重要，它是磷灰石，骨骼和磷质海鸟粪的主要成分。
The most important naturally occurring phosphate is phosphate of lime or tri-calcium phosphate found as the chief ingredient of phosphatic rock bones and phosphatic guanos.
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