查询词典 hydroxide

Methods: the experimental group of 80 dental Endocal calcium hydroxide paste inclose root canal sterilization; The control group of 80 teeth inclose formocresol.

实验组80牙用Endocal氢氧化钙糊剂封入根管内消毒；对照组80牙封入甲醛甲酚。

Aim To prepare lower degree of substituted starch acetate with cassava starch as material, acetic anhydride as acetylation reagent, sodium hydroxide as catalyst and sodium sulfate as gelatinization inhibiter.

目的 以木薯淀粉为原料，醋酸酐为乙酰化试剂，NaOH为催化剂，Na2SO4为膨胀抑制剂，制备了低取代度木薯淀粉醋酸酯。

This paper reviewed the progress in studies on the main non-halogen flame retardant systems for polypropylene cable insulant, emphatically introduced the development and application status of the typical flame retardants, such as organosilicon compound, nano-composite materials, metal hydroxide and phosphorus/ nitrogen intumescent flame retardant.

综述了用于无卤阻燃聚内烯电缆料的主要阻燃体系的研究进展，介绍了金属氧化物水合物体系、磷-氮膨胀型阻燃体系、有机硅复合体系和纳米复合材料阻燃体系的开发应用情况。

This article compares with chromatographic peak shape of samples to determine the kind of polluted PCBs with potassium hydroxide and vitriol interferer.

本文通过氢氧化钾、浓硫酸破坏样品中可能的干扰物。再将样品色谱峰形进行比较。

Using acrylic resin as the binder,P-C-N intumescence system and nanometer magnesium hydroxide as fire retardant, super-thin fire retardant coatings for steel structures was prepared and its performance was studied.

研究了以丙烯酸树脂为基料、P-C-N为膨胀体系、纳米Mg2为阻燃剂的超薄型钢结构防火涂料的防火性能。

Iron is recovered in the form of jarosite and ferric hydroxide that the concentrations of them determinate with dichromate method are

其中铁以黄铁钒和氢氧化铁的形式回收利用，经GB/T 223.7-2002重铬酸钾滴定法滴定其铁含量分别为72.37％，62.0％己达到可综合利用的水平。

The influences of triethylamine amount, surfactant, reaction temperature and time on the size and shape of lanthanum hydroxide nanorods were investigated in detail.

详细研究了三乙胺的用量、表面活性剂、反应温度和时间对产物形貌及尺寸的影响。

Cast lead ; corrosion rate ; lead white rust ; lead hydroxide ; basic lead carbonate

铅锭；腐蚀速率；铅白锈；氢氧化铅；碱式碳酸铅

Pretreatment of lignocellulose by sodium hydroxide has been studied.

植物纤维素是符合可持续发展要求的可再生资源。

NH4+ when heated with sodium hydroxide solution, a colorless gas is given out which can turn wet red litmus paper to blue.

铵盐和氢氧化钠溶液共热时会放出一种无色气体，它可把湿的红色石蕊试纸变蓝。

Anna: No, I've got a hangover.

不是，我昨晚宿醉了。

We head into the mountains in Su's new Land Cruiser, stop for lunch at a scenic restaurant and then hang around drinking beer and eating fruit as two of his employees attempt to lure the birds with a tape recording of the fowl's mating call.

我们坐上苏的巡逻车向山顶出发，在一家风景优美的餐馆吃了中饭。然后我们喝着啤酒吃着水果四处逛。