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naphthalene n.【化學】萘。

naphthalene ball

Abstract : based on composite testing of naphthalene superplasticizer and different retarders as well as retarding water reducer , in which the overall amount of admixture is certain , this paper analyzes the influence of these multicomponent admixtures on flowability of neat cement 、 retarding action and development of strength of colloidal mortar . the result shows that compatibilities of different components are different , and composition effects are also different 文摘:在總摻量一定的情況下,就萘磺酸鹽高效減水劑與不同緩凝組分、緩凝型減水劑等復合后對水泥凈漿流動度、緩凝作用、膠砂強度發展等性能的影響作用進行了試驗分析,結果表明各不同組份復合的相容性不同,復合效應也存在差別。

New type of liquid crystals such as laterally fluorinated naphthalene indane , axially fluorinated cyclohexane and liquid crystal containing highly fluorinated substituent , which with high negative dielectric anisotropy low viscosity and high clearing point were emphasized 重點介紹了近年來開發出的一些具有大的介電各向異性、低黏度、高清亮點的新型液晶,如側向氟取代萘環、茚環類,軸向氟代環己烷類,含多氟取代類液晶等。

The simultaneous purification of tar , naphthalene , h2s , organic sulfur , nh3 , hcn and benzene can he achieved by temperature swing adsorption , which is low in investment and operating cost and has been used successfully in industrial production 采用變溫吸附法同時凈化焦爐煤氣中的焦油、茶、 h2s 、有機硫、 nh3 、 hcn和苯,其投資和運行成本都很低,并已在工業應用中取得成功。

They are widely applied in the tower of coking desulfurizing , benzene scrubbing , naphthalene scrubbing , ammonia scrubbing and chemical fertilizer hot water saturation tower , electric power plant wet cooling tower 該系列填料具有比表面積大、空隙率高、傳質系數大、抗堵塞、抗腐蝕、耐急冷急熱、使用壽命長、易安裝的優點,是一種理想的塔填料。

Soil quality - gas chromatographic determination of the content of volatile aromatic hydrocarbons , naphthalene and volatile halogenated hydrocarbons - purge - and - trap method with thermal desorption 土質.揮發性芳香烴類物質萘和揮發性鹵化烴含量的氣相色譜分析測定.有熱解吸作用的洗滌和打擊法

Water quality - gas - chromatographic determination of a number of monocyclic aromatic hydrocarbons , naphthalene and several chlorinated compounds using purge - and - trap and thermal desorption 水質.使用purge - and - trap和熱解析作用對單環芳香烴萘和不同氯化物的氣相色譜分析測定

Soil quality - gas chromatographic determination of the content of volatile aromatic hydrocarbons , naphthalene and volatile halogenated hydrocarbons - purge and trap method with thermal desorption 土質.氣相測譜法測定揮發性芳烴萘和揮發性鹵化烴含量.熱解析的凈化和收集法

Water quality - gas - chromatographic determination of a number of monocyclic aromatic hydrocarbons , naphthalene and several chlorinated compounds using purge - and - trap and thermal desorption 水質.通過purge - and - trap及熱解吸作用對單環芳香烴奈和不同氯化物的氣相色譜測定

Soil quality - gas chromatographic determination of the content of volatile aromatic hydrocarbons , naphthalene and volatile halogenated hydrocarbons - purge - and - trap method with thermal desorption iso 15009 : 2002 土壤質量.揮發性芳烴萘和揮發性鹵代烴含量的氣相色

Processor of coal tar from its coke - making operations , manufacturing soft pitch , refined naphthalene , benzene , toluene , and creosote oils . located in taiwan -生產四甲基哌啶酮,四甲基哌啶醇,五甲基哌啶醇,四甲基哌啶胺,癸二酸,己酸,增塑劑,抗氧劑,熒光增白劑等

Producer of chemicals derived from coal tar , located in china . products include derivatives of naphthalene , anthracene , phenanthrene , and fluorene -生產銷售乙醛酸乙二醛醇脂- 12草酸等有機化工品,包括公司簡介產品介紹等

Coal chemical producer in china , offering metallurgical and foundry coke , benzene and derivatives , naphthalene , asphalt , and anthracene oil -生產氯乙酸,對氨基苯乙酮,氯乙酸母液,鹽酸等,包括公司簡介產品介紹等

Zirconium and zirconium alloys - determination of cobalt content - 1 - nitroso - 2 - hydroxy - 3 . 6 - naphthalene - disulfonic acid sodium salt spectrophotometric method 鋯及鋯合金化學分析方法亞硝基r鹽分光光度法測定鈷量

Therefore , using camphor is safer than using naphthalene balls . but of course , camphor is more expansive than naphthalene balls 因此,使用樟腦比使用臭丸更為安全。但價錢方面,樟腦比臭丸較貴。

In the summer , many people would put camphor or naphthalene balls in the cabinet to keep the insects out of the clothes 夏天的時候,許多人把樟腦或臭丸(衛生球)放入衣柜里,以防上昆蟲的蛀蝕。

Color reaction of 2 - 4 - chloro - 2 - phosphophenylazo - 7 - 2 , 4 - dichlorophenylazo - 1 , 8 - dihydroxy - 3 , 6 - naphthalene sulfonic acid with bismuth and its application 萘二磺酸與鉍的顯色反應研究及應用

Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene , anthracene and chrysene < uk >芳環能在一對相鄰碳上結合,生成萘、葸和等化合物。 < / uk >

Study on the reaction of new reagent3 - p - methylphenylazo - 4 , 5 - dihydroxyl - 2 , 7 - naphthalene disulfonic acid with strontium and its application 萘二磺酸與鍶顯色反應的研究及其應用

Aromatic rings can be joined at a pair of adjacent carbons to yield compounds such as naphthalene , anthracene and chrysene 芳環能在一對相鄰碳上結合,生成萘、葸和?等化合物。