1·After ALL the NaOH has dissolved, top up to 250 ml with fresh methanol, as there may be some evaporation during mixing.
等氢氧化钠完全溶解后，倒入少量新鲜甲醇至250毫升，来弥补溶解过程中挥发掉的甲醇。
2·Through the study on the added amount of NaOH, reaction time and temperature, the optimum production process conditions were determined.
通过对氢氧化钠的加入量、应时间、应温度等生产条件的研究，得出了最佳生产工艺条件。
3·The effects of reaction temperature, reaction time and amount of NaOH on the degrees of substitution of products were discussed by orthogonal test.
通过正交实验，研究了氢氧化钠用量、反应温度和反应时间对取代度和反应效率的影响。
4·The relation between the interface tension and the encapsulated phase NaOH concentration is discovered too.
还发现，内相中氢氧化钠的浓度对两相界面张力也有影响。
5·Conclusion HCl may intensify the spontaneously contractive activities of the smooth muscle in the duodenum and jejunum superior section of Guinea Pig and NaOH diminish those of the jejunum and ileum.
结论盐酸对豚鼠十二指肠和空肠平滑肌自发收缩活动有增强作用，而氢氧化钠对空肠和回肠的活动则有减弱作用。