氢氧化钠

He adds a milligram of sodium hydroxide, which makes the water slightly basic.

他还补充了氢氧化钠，使水略基本毫克。

Surfactants, Dye, Sodium Hydroxide, Monoethanolamine, Sodium MetaSilicate

表面活性剂，颜料，氢氧化钠，单乙醇胺，偏硅酸钠

The yield of morpholine can be 35% and the yield mixed alcohol can be 42% under temperature of 210℃, pressure of 2.0 MPa, the mass ratio of the water and morpholine by-product was of 1:1, using sodium hydroxide as catalyst, and the amount of 1.5% for the by-product, reaction time of 4 hours.

在210℃，2.0MPa下，水与副产物的质量比为1：1，采用氢氧化钠为催化剂，用量为副产物的15%，反应时间为4小时，吗啉的收率可达35%，混合醇的收率可达42%。

This paper mainly studies effect and influence factor that typical corrosive medium (muriatic acid, vitriol, nitric acid, sodium hydroxide, sodium chloride etc.), consistence and condition temperature acts on the material coated on castiron centrifugal interface (PFEP, PPS, CPE, remodeled epoxy). It is studied that powder electrostatic spray, suspend fluid spray, suspend fluid electrophoresis underside coat etc. technics influences on coat quality coated with above four anticorrosive material. The property analysis is done that above four anticorrosive material and three coat technics adapt to centrifugal pump frame and running dynamic condition. In addition, the effect is introduced that castiron centrifugal coated anticorrosive material is used in coal water with alum.

本文侧重研究了典型腐蚀工作介质盐酸、硫酸、硝酸、氢氧化钠碱、氯化钠盐等品种、浓度、环境温度，对铸铁离心泵过流面的聚全氟乙丙烯、改性聚苯硫醚、改性氯化聚醚、改性环氧四种防腐涂层材料的试验使用效果和影响因素分析；研究了四种涂层材料粉末静电喷涂、悬浮液喷涂、悬浮液电泳底涂等涂装方法工艺对涂层质量的影响；四种涂层材料和三种涂装方法对离心泵结构和运行动态环境的适应性分析；介绍了铸铁离心泵防腐涂层在煤矿矾水中的应用效果。

objectiveto analyze the total content of flavonoids in nigella glandulifera preyn et sint by colorimetric method.methodsrutin was used as reference substance and the detection wavelength was 500 nm.

目的采用比色法测定维吾尔药黑种草子中总黄酮的含量。方法以芦丁作对照品，以亚硝酸钠-硝酸铝-氢氧化钠体系为显色剂，检测波长为500 nm。

Typical for a nonpolar gas, it is poorly soluble in water but soluble in nonpolar organic solvents.

六氟化硫是个极为惰性的气体，不与水、盐酸、氢氧化钠和熔融的钠作用，但会与金属锂反应并放热。

The reduction of oxime was investigated and the 17-amino steroid was obtained via reduction with Ni-Al alloy in yield of 85~90%.

本文尝试了六种将肟还原成胺的方法，发现在氢氧化钠溶液存在下用镍-铝合金还原甾体肟化合物，反应条件温和，反应时间短，产品收率85～90%。

Alkali-resistant:Without opparent change in 10% Oxyhydrogen sodium solution at 72 hour.

耐碱性：在10%氢氧化钠水溶液中浸72小时无明显变化。

The articles for daily use that abroad imports called exotic in the past, the carry that use a boat comes, industry produces indispensable hydrochloric acid, oxyhydrogen to change sodium, the magnesium that manufacturing plane, car uses is waited a moment, it is the product of the rework of marine product or marine product, this kind of breed gets too numerous to mention one by one more, concern with everybody close.

国外进口的生活用品过去就叫舶来品，是用船运来的，工业生产必不可少的盐酸、氢氧化钠，生产飞机、汽车用的镁等等，都是海洋产品或海洋产品的再加工的产品，这类品种多得不胜枚举，和每个人都关系密切。

It was found that the light emission produced by the oxidation of luminol by postassium periodate in the basic medium was enhanced by ampicillin sodium. A new, simple and rapid method has been developed for the determination of ampicillin sodium.

在氢氧化钠介质中，高碘酸钾氧化鲁米诺产生化学发光，氨苄西林钠显著增强该体系的发光，据此建立了一种简单、快速测定氨苄西林钠的流动注射化学发光新方法。

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。