Through a series of laboratory and small pilot scale continuous experiments, the feasibility of urea - calcium superphosphate production with Yichang phosphorous ore has been proved.

通过一系列的实验室试验和小型中间连续试验，明确了宜昌磷矿制尿素过磷酸钙的可行性。

The serum ionized calcium, citrate, bicarbonate, sodium, serum creatinine and urea concentration.

监测血清游离钙、枸橼酸、血钠、碳酸氢根浓度；

Study on effect increased weight by compound nutrition block which composed salt, the urea, the molasses, the calcium hydrogen phosphate and the sodium sulfate.

用膨润土、食盐、尿素、糖蜜、磷酸氢钙和硫酸钠等为主要原料制作成复合营养舔块来研究其对山羊增重效益的影响。