查询词典 formaldehyde solution

Melamine and formaldehyde in aqueous solution in which the response is the most important.

其中三聚氰胺与甲醛水溶液的反应是最重要的。

To study the effects of air disinfection by four methods in cosmetic workshop,air was disinfected by ultraviolet rays irradiation, 40% formaldehyde fume , pentadialdchyde solution atomize and ozone gas generator, then efficiency of disinfection was evaluated by the petridish method after disinfected.

现阶段，紫外线法和甲醛法是化妆品车间进行常规空气消毒、防止产品感染的主要措施。1999年~2001年对两间化妆品厂的化妆品车间空气微生物污染状况的调查合格率分别为17.3%、13.7%和25.8%，空气消毒不合格是一个较突出的问题，影响了消毒工作质量的提高。

In acid solution, Carbinol was oxidized formaldehyde,then it interacts with chromotropic acid and generates purple chemical compound.

甲醇在酸性溶液中，被高锰酸钾氧化成甲醛，再在硫酸介质中与变色酸生成紫色化合物，在 5 80nm处用 1cm比色皿比色测定。

In order to expand the utilization fields of wood and decrease the costs of carbon fiber,carbon fiber precursor from liquefied wood was prepared by soaking liquefied wood in the solution of hydrochloric acid and formaldehyde,after melt-spinning by adding hexamethylenetetramine.

为了扩大木材的应用领域和降低碳纤维的成本，以木材液化物为原料，加入六次甲基四胺熔融纺丝，经甲醛和盐酸溶液固化处理后获得木材液化物碳纤维原丝，利用IR、XRD、拉曼光谱分析仪等初步揭示了木材液化物碳纤维原丝在炭化过程中微结构的变化。

The carbon fiber precursors were prepared from liquefied wood in phenol by adding hexamethylenetetramine and soaking in the solution containing hydrochloric acid and formaldehyde as the main components.

以木材苯酚液化物为原料，加入六次甲基四胺熔融纺丝后，经甲醛和盐酸溶液固化处理、炭化后得到木材液化物碳纤维。

Formaldehyde is absorbed by an acidic saturated solution of 2,4-dinitrophenyl hydrazine and converted to its hydrazone; the hydrazone is then extracted with CS2 and quantitated by GC.

利用尾气中的甲醛与2，4-二硝基苯肼酸性饱和溶液反应生成甲醛腙的特性，通过检测甲醛腙的浓度来检测尾气中的甲醛含量。

The resistance, tensile strength and ductibility of formaldehyde's deposit were better than that from sodium hypophosphite solution.

以甲醛为还原剂的化学镀铜层的电导率、抗拉强度、延伸率等物理性能均优于次磷酸钠化学镀铜层。

Or methanal Formaldehyde (37%) in water solution, called formalin, is used as a preservative, an embalming agent, and a disinfectant .

通常以福尔马林(含甲醛37%的水溶液)形式出售，用于防腐剂、尸体保存以及消毒剂。

The method of using formaldehyde buffer solution a b sorption-hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity,and prevents from adoptin g mercurial absorbent.But the conditions in lab are not well controlled,the v alue of reagent blank and standard curvilinear slope can't accord with the one s tipulated in"Methods for Air and Waste Gas Monitoring and Analysis".Some opra tional techniques for SO2 determination in lab are introduced for reference.

文摘：以甲醛缓冲溶液吸收-盐酸副玫瑰苯胺分光光度法测定空气中的二氧化硫，方法灵敏度高，选择性好，避免了使用含汞的吸收液，但如果实验条件控制不好，试剂空白值及标准曲线的斜率就会不符合《空气和废气监测分析方法》中规定的值，本文着重从操作技巧方面对二气化硫测定的实验室质量控制进行分析，仅供参考。

An alkaline solution of the sample is treated with acid bleached rosaniline and formaldehyde.

一分样品的碱性溶液用酸漂白的玫瑰苯胺和甲醛处理。

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。