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It also classifies them in accordance with the compound method of triazene reagents as follows: reagents diazotizated with sodium nitrite and muriatic acid, reagents diazotizated with nitrosyl positive ion, reagents diazotizated with n-butyrate nitrite.These reagents with high sensitivity and good choice have been widely applied to the determination of microa mounts of cadmium and...

按三氮烯类试剂合成的方法进行分类,分别为在亚硝酸钠和盐酸作用下重氮化的试剂,在亚硝酰正离子作用下重氮化的试剂,在亚硝酸正丁脂作用下重氮化的试剂,此类试剂灵敏度高,选择性好,广泛应用于被镉、汞等过渡金属离子污染的环境样品的分析中。

She recognized her room by the vapor of muriatic acid in the workshop next door, the hallway by the perfume of jasmines in the garden, my grandparents' bedroom by the smell of the wood alcohol they both would rub on their bodies before they went to sleep, Aunt Mama's room by the odor of oil in the lamps on the altar, and, at the end of the hallway, the succulent smell of the kitchen.

隔壁的工作室里盐酸挥发出气体,她据此辨认自己的房间;院子里的茉莉芬芳馥郁,她借以识别走廊;外祖父母临睡前都要在身上擦木精,她就凭这种气味确定他们的卧室;Mama姨婆的房间呢,则是靠祭坛上那些灯的灯油味儿来指引。还有,在走廊的尽头,烹饪的味道浓厚扑鼻的,当然就是厨房了。

This article , having studied experiments on saccharose inversion with sodium bisulphate as catalyzer , discovers that sodium bisulphate is more appropriate than muriatic acid for experiments on saccharose inversion .

以硫酸氢钠为催化剂,对蔗糖转化反应实验进行了研究,实验结果表明:用硫酸氢钠代替盐酸做蔗糖转化实验效果更好。

Character: crystal powder, it likes white or grey ,asepsis ,odorless, and can dissolve in muriatic acid , nitric acid .

性状:结晶粉末,呈白色或灰白色,无毒、无臭、能溶于盐酸、硝酸。

The present invention adopts the technical proposal of adopting ZSM-5 mesoporous molecular sieve raw powder with a silicon-aluminum mol ratio SiO2Al2O3 of 20 to 1000 and a weight percentage of 20 to 100 percent as well as at least one caking agent selected from SiO2, clay and Al2O3 to extrude, tablet or spray into shape; then treating for 1 to 8 hours by 0.1 to 3 mol/l of at least one ammonium liquor from ammonium nitrate, ammonium chloride or ammonium sulphate or 0.1 to 8.5 mol/l of at least one acid liquor from muriatic acid, nitric acid, vitriol or acetic acid under a temperature of 20 to 90 DEG C; then using steam to treat for 2 to 15 hours under the temperature condition of 400 to 700 DEG C; using a liquor of 0.1 to 3mol/l selected from at least one of oxalic acid, citric acid or maleic acid under a temperature condition of 20 to 90 DEG C to dip for 2 to 5 hours to obtain the modified molecular sieve catalyst, thus better solving the problems.

本发明通过采用硅铝比SiO2/Al2O3为20~1000重量百分比计20~100%的ZSM-5介孔分子筛原粉与余量的选自SiO2、粘土或Al2O3中至少一种粘结剂挤条、压片或喷球成型;再经过0.1~3摩尔/升选自硝酸铵、氯化铵或硫酸铵中的至少一种铵溶液或0.1~8.5摩尔/升选自盐酸、硝酸、硫酸或乙酸中的至少一种酸溶液在温度20~90℃下处理1~8小时;然后在温度为400~700℃条件下水蒸汽处理2~15小时;再用0.1~3摩尔/升选自草酸、柠檬酸或马来酸中至少一种在温度为20~90℃条件下浸渍2~5小时得所需改性分子筛催化剂的技术方案较好地解决了该问题,可用于甲醇转化制丙烯的工业生产中。

After removing the catalyzer by dense muriatic acid, carbon nanotubes are reacted with mix acid (vitriol:nitric acid=3:1 vol./vol.). By comparing the surface image of gained carbon nanotubes under the different condition, the best mix acid oxidation temperature is fixed on 140°C and the reaction time is 30min. The soluble carbon nanotubes were prepared by decorating of octadecylamine on the surface of nanotubes. Three processes of grafting were investigated in this research.

对碳纳米管的热失重、差热分析结果表明,通过在一定温度下空气氧化可去除大部分碳颗粒;而浓盐酸浸泡可去除碳纳米管制备过程中残留的催化剂颗粒;对在不同条件下与硫酸和硝酸配制的混酸反应处理后得到的碳纳米管的表面形貌研究表明最佳混酸氧化条件为140℃氧化30min。

After surgery,all patients had SpO2 somewhat declined.6 had lung infection.6 were removed of bronchial secretion by bronchoscope.2 were supported by ventilator by using intubation.2 underwent tracheotomy.1 had disturbances of acidbase balance and treated by using hydrochloric acid muriatic acid.

术后所有病人PaO2均有不同程度的下降,6例出现肺部感染,6例行纤维支气管镜吸痰,2例通过气管插管给予呼吸机支持,2例行气管切开术,1例酸碱平衡紊乱使用盐酸精氨酸治疗。

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。

By the end of 2005, its production capacity reached 330,000 T/Y urea, 300,000T/Y Synthetic Ammonia, 100,000T/Y sulfur compound fertilizer, 200,000T/Y hi-concentrated compound fertilizer, 80,000 T/Y vitriol, 30,000 T/Y muriatic acid, 50,000 T/Y carbinol and so on.

到2005年底,年生产规模已达到:合成氨30万吨,尿素33万吨,硫基复合肥10万吨,高浓度复合肥20万吨,硫酸8万吨,盐酸3万吨,甲醇5万吨、碳酸氢铵20万吨。

Muriatic Acid, 15min, no blister

10%盐酸,15分钟,无气泡

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According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。