氢氧化钠

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。

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。

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。

It can transport all kinds of temperature and deepnesses unorgan acid such as nitric ,sulfuric,hydrochloric acid,organ acid,strong alkali,weak alkali,salt solution,different liquidized oil chemical products,organ compounds and others erosive liquid .

该型泵可输送各种温度和浓度的硝酸、硫酸、盐酸、和磷酸等无机酸和有机酸；各种温度和浓度下的氢氧化钠和碳酸钠等碱性溶液各种盐溶液；各种液态石油化工产品、有机化合物，以及其他有腐蚀性的液体。

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. The concentration of sodium hydroxide and the length of treatment vary depending on the particular properties to be achieved and whether it is yarn or cloth that is being processed.

在丝光过程中，纱线或织物在室温条件下保持一定的张力由氢氧化钠溶液处理，溶液的浓度为15%~30%，浓度的大小以及处理的时间取决于所期待的整理结果，另外纱线和织物对处理条件的要求也不相同。

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%。

The invention discloses a treating method of tail water membrane filtering condensation fluid in chemical industry park, the steps of which are that the pre-treated membrane filtering condensation fluid goes through a device filled with resinous adsorbent under the common temperature and a flow quantity of 0.5-8BV / h, the absorbed water can be discharged after neutralizing with small capacity of alkali, desorbing and regenerating the resin by natrium hydroxydatum solution with the flow capacity of the desorbing agent is 0.5-3.0BV / h, the high concentration desorbing fluid disposes safely and the low concentration desorbing fluid can be periodically used to preparing next pluralities of desorbing agent.

本发明公开了一种化工园区尾水膜滤浓缩液的治理方法。其步骤为：将预处理后的膜滤浓缩液在常温和0.5～8BV/h的流量条件下，通过装填有树脂吸附剂的装置，吸附出水加少量碱中和后即可排放；将上述树脂用氢氧化钠溶液脱附再生，脱附剂流量为0.5～3.0BV/h，高浓度脱附液安全处置，低浓度脱附液可用于配制下一批脱附剂循环套用。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。