Acid rain may possibly cause the double harm for the sulfuric attack and the sulfate attack.
酸雨有可能造成硫酸盐侵蚀和酸侵蚀双重的危害。
This paper mainly declares the method of extracting lithium from lepidolite and preparing the lithium chloride by double-decompose reaction with material lithium sulfate and calcium chloride.
本课题主要从宜春锂云母中提取锂，继而以硫酸锂溶液为原料复分解反应制备氯化锂。
Red mango (Tommy) fruits were bagged with different bagging materials, i. e. sulfate paper, white paper, black double layer paper, black un-woven cloth, white un-woven cloth and newspaper.
通过硫酸纸袋、白色纸袋、黑色双层纸袋、纱网袋、白色无纺布袋、黑色无纺布袋和报纸袋等不同套袋材料对红?。
To compare the effect of clinical application of magnesium sulfate and senna before double contrast colography, 50 patients of each group for double contrast colography were studied.
为比较硫酸镁与番泻叶的临床应用效果及探讨两者优选问题，对结肠造影术前用硫酸镁组与番泻叶组各50例进行对照分析。
Conclusion Total yields of 60% and 50% could be reached for the preparations of SAM's sulfate salt and double salt of s…
结论硫酸盐的制备得率（从酵母到成品）可达60％以上，而硫酸、对甲苯磺酸双盐的得率可达50％以上。
The present invention is related to an improved technological process for producing sodium nitrate by the double decomposition of calcium nitrate and sodium sulfate.
本发明涉及到对用硝酸钙和硫酸钠复分解而得硝酸钠的工艺的改进方法。
The process of synthesis potassium sulfate by phosphogypsum double salt method was studied and improved.
对磷石膏复盐法制备硫酸钾工艺进行了研究和改进。
The process of synthesis potassium sulfate by phosphogypsum double salt method was studied and improved.
对磷石膏复盐法制备硫酸钾工艺进行了研究和改进。
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