P sources的用法和樣例：
例句
- Study on biological value of inorganic phosphorus sources in various chemical forms for broiler chickens.
不同化學形式的無機磷源在肉雛雞體內生物學效價的研究。 - Effects of Phosphorus Sources of Different Forms on Phosphorus Metabolism of Microcystis aeruginosa and Adhesive Pseudomonas sp.
不同形態磷源對銅綠微囊藻與附生假單胞菌磷代謝的影響。
