查询词典 sodium hydroxide

You can use pre-made indicator solution, adding the sodium hydroxide to the indicator rather than diluting with water.

你可以使用预先作出指示溶液，加氢氧化钠的指标，而非淡化水。

The experimental result showed that, the fraction oil depickling solvent technology has wide scope of material oil, and the sodium hydroxide amount used to drop 67~75%, emulsifies completely eliminates, the fraction oil loss drops 50~60%; The depickling solvent regenerative cycle use, doesn't have the waste lye to discharge, the environmental pollution is degraded greatly.

实验结果说明，馏分油脱酸剂技术具有适应原料范围宽，烧碱用量下降67%～75%，完全消除乳化，馏分油损失下降50%～60%；脱酸剂再生循环使用，无废碱液排放，环境污染大为降低等优点。

The fatty acids in the oil were esterified by sodium hydroxide-methanol, and then analyzed by gas chromatography-mass spectrometry.

方法采用索氏提取法提取其脂肪酸，再进行甲酯化处理，以气相色谱质谱联用仪进行了分离和鉴定。

Preparation of starch succinate with low substitution degree was studied by using corn starch as raw material,succinic anhydride as esterifying reagent,water as solvent and sodium hydroxide as catalyst.

以玉米淀粉为原料，丁二酸酐为酯化剂，以水为媒介，氢氧化钠为催化剂对低取代度淀粉丁二酸酯的制备工艺进行了研究。

With potassium ferricyanide used as catalyst, LCVL dissolved in sodium hydroxide was oxidized to CVL by inpouring the air for 18h. The yield of CVL is 90.50%.

把LCVL溶解在碱性溶液中，以铁氰化钾为催化剂，通入空气反应18h，得结晶紫内酯，收率为90.50%。

METHODS: Acetic acid solution was added into chitosan to prepare 8% chitosan acetic acid hydrosol, which was then stayed for one day. Flowing the immersion into the hydrosol and immediate dislodgement, plastic tube was soaked in 1 mol/L sodium hydroxide for 3 minutes. Hydrosol out of the tube etiolated and coagulated into jells, the tube was removed when the jells were semi-dried.

利用乙酸溶液制备8%壳聚糖乙酸水溶胶，溶胶放置1 d，将硬塑料管浸入溶胶后迅速取出放入1 mol/L氢氧化钠液内3 min，见管外溶胶变白凝固成胶冻状，取出后晾到五分干后轻轻退下内管，晾干后即成为壳聚糖导管。

In this paper, the mechanism and forming process of the cracks in view of the stress corrosion were analyzed accounting for the pressure vessels working in the atmosphere of wet hydrogen sul-phide, sodium hydroxide or liquidized ammonia.

本文分析了压力容器及设备在湿润硫化氢、氢氧化钠溶液和液氨介质中应力腐蚀开裂的机理和应力腐蚀开裂的过程。

The property of hydrolyzation was tested by marinating the PUF with different vegetable oil polyol into the solution of sodium hydroxide.

实验还进行了水解性能测试，即将不同植物油多元醇含量的聚氨酯泡沫塑料放入氢氧化钠中浸泡，试验表明植物油多元醇的存在有利于泡沫塑料的降解，植物油多元醇泡沫塑料是一种更加易于环境降解的材料。

Commutative ion resin of strong acid instead of hydrochloric acid neutralized sodium hydroxide meliorated step of subsequent treatment.

用强酸型离子交换树脂代替盐酸中和氢氧化钠对产物的后处理步骤进行了改进。

In the mercerizing process, yarn or cloth is treated under tension at room temperature with a sodium hydroxide solution that may vary in strength from 15 to 30 percent.

丝光过程中，纱线或织物在室温条件下保持一定张力由氢氧化钠溶液处理，溶液的浓度为15%-30%。

What would he tell Judith and the children?

他将怎样告诉朱迪丝和孩子们呢？

I this is at that time, the opinion with peacockish true girl is full of in a heart.

这就是当时的我，一个心中布满虚荣的女孩子真实的想法。