... low-grade ore 低品位矿石 low-grade phosphate ores 低品位磷矿 low-illumination 低照度 ...
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The output of potassic fertilizer is comparatively low. It is very urgent to utilize low-grade phosphate ores and insoluble potassium resources to produce phosphorus-potassium compound fertilizer.
大力开发我国储量丰富的低品位磷矿及难溶性钾资源是我国化肥工业走可持续发展道路的必由之路。
参考来源 - 汉源磷钾矿特性与制复肥反应过程机理研究·2,447,543篇论文数据，部分数据来源于NoteExpress
建议建立科研基金，进一步加强中、低品位磷矿采、选矿技术开发；
Some suggestions are also put forward, e. g. to establish science and technology fund and to enhance mining and beneficiation technology;
利用生物冶金的方法，将不溶性磷源转化为水溶性或枸溶性磷源，从而提供了一条利用低品位磷矿的新途径。
The method of bio-metallurgy is capable of converting insoluble phosphate resources into water or citric acid soluble ones.
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