A review on the trace analytical techniques for orthophosphate in ocean environments is presented in this paper .

本文综述了近年来海洋环境中痕量活性磷的分析技术。

This paper introduced relationships between three key main cultivational factors sowing norm , amount of complex diammonium orthophosphate used and amount of urea used and stem yield , grain yield and economic profit of flax udner yili local cultivational condition .

本文介绍了在当地生产条件下亚麻栽培三个关键要素，即播种量、复合肥磷酸二铵和尿素用量与亚麻原茎产量、种子产量和经济效益之间的关系。