1·Thus, sodium hydroxide was used in this work for the pretreatment of ramie fiber.
因此，氢氧化钠是在这项工作中所使用的预处理苎麻纤维。
2·Sodium reacts violently with water to produce hydrogen gas and sodium hydroxide.
钠与水剧烈反应生成氢气和氢氧化钠。
3·The slight error resulting from the partial solubility of the fibre in sodium hydroxide of higher concentrations is corrected.
对由于纤维在高浓度氢氧化钠溶液中的部分溶解而引起的小量误差进行了校正。
4·Turn the remnant of sodium hydroxide in the tube into water, and you'll find the solution turns red litmus blue.
把管内的氢氧化钠残液倒入水中，你就会发现：溶液会使红色石蕊试纸变蓝。
5·Sodium hypochlorite solution has been prepared by chlorine and sodium hydroxide, the content of free alkali should be controlled at about 10.8%, and the effective chlorine at about 8.0%.
以氯气和氢氧化钠为原料制备次氯酸钠溶液，控制其中游离碱含量在10.8%左右，有效氯在8.0%左右。