acidic

Basic, acidic extrusive and volcanoclastic rocks are known as the main rock types.

石炭纪末期岩浆活动开始,早二叠世晚期和晚二叠世早期是两个主活动期。

The particulates have more acidic pollutants with strong acidity and have the corrodibility to grottoes.

细粒子中有较多酸性污染物并粗粒子酸性强,这些细粒子对石窟有侵蚀作用。

Does acidic soil preserve well?

酸性土壤容易保持吗？

Development of preparation of acidic dyes by oxidization of triarylmethane Leuco was reviewed with 21 references.

摘要以21篇文献综述了三芳甲色体氧化制备酸性染料研究进展。

Diphenylbenzidine was synthesized by diphenylamine using glacial acetic acid and water as solvent in acidic condition.

以二苯胺为原料,水和冰醋酸为溶剂,在酸性条件下一步合成二苯基联苯二胺,该方法具有操作简单,原料易得等优点。

OBJECTIVE:To study the process of acetylized racemization of D-penicillamine in the acidic condition.

目研究D-青霉胺在酸性条件下进行酰化外消旋工艺。

O-Benzylhydroxylamine hydrochloride was conveniently prepared by O-benzylation of N-hydroxybenzamide,acidic hydrolysis and salifying with HCl(g).The overall yield was over 76%.

氧芐基羟胺盐酸盐可通过苯甲羟肟酸氧苄醚化、酸水解及氯化氢成盐制得,总收率76%。

The spectrogram suggested that the absorption peak of the pigment was 627nm in alkalinous condition, 527nm in acidic condition.

光谱学图谱表明该色素碱性条件下最大吸收峰在627nm处，酸性条件下最大吸收峰在527nm处。

A white powder,coarse particles and mealiness ,hardly souble in acidic or alkaline solutions,with stable chemical property and good sintering performance.

外观呈白色粗颗粒或微粉状两种，难溶于酸或碱液中，化学性能稳定，具有良好烧结性能。

Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst.

以乙烯酮和丙酮为原料,用强酸性离子交换树脂代替浓硫酸作为催化剂,直接酯化合成乙酰丙酮中间体乙酸异丙烯酯。

The method of liquid phase synthesis of dioxane from the cyclodehydration of diethylene glycol catalyzed by ASP-type solid acidic catalysts was studied.

研究了ASP固体酸催化剂一缩乙二醇(二甘醇)环化脱水合成1,4-二氧六环液相反应。

In acidic medium, the interaction of potassium dihydrogen phosphate with ammonium molybdate, potassium antimonyl tartrate and ascorbic acid result in blue compound complex.

在酸性介质中,磷酸二氢钾与钼酸铵、酒石酸锑钾及抗坏血酸作用,生成蓝色络合物。

Single antibody of NSE, multi-antibody of glial fibrillary acidic protein (GFAP) and single antibody of neurofilament (NF200) were provided by Wuhan Boster Company.

神经元烯醇化酶单抗、胶质纤维酸性蛋白多抗、神经中丝蛋白单抗均购自武汉博士德公司。

With hydrogen sulfide and tetrapropylene as raw materials, TDM was synthetized by the one step process in the presence of acidic ion exchange resin.

摘要 以硫化氢和十二烯为反应原料，以酸性离子交换树脂为催化剂一步合成叔十二碳硫醇。

A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.

文用异龙脑与苯酚在酸性催化剂作用下进行选择性基化反应,再经催化氢化还原得到龙脑檀香产品。

Results indicated that the dyeing effect of acidic azaleine is better than hematoxylin followed by a wash of eosin to microsections of these three specimens.

文试验了不同组织学方法对人股骨中段、人桡骨远侧以及狗桡骨中段标进行处理，结果表明酸性复红对三种标磨片均有较好染色效果。

The productive technology of active carclazyte produced by activating bentotite was introduced emphatically. The treatment method of acidic waste water produced in wet process was also described.

主要介绍了膨润土活化生产活性白土生产工艺及湿法工艺中产生酸性废水处理方法。

Attractive, narrow shrub or small tree (Rhus, or Toxicodendron, vernix) of the sumac, or cashew, family, also called poison elder, native to swampy acidic soils of eastern North America.

株形美观，茎枝生长紧密灌木或小乔木（毒盐肤木〔Rhus vernix〕或毒漆〔Toxicodendron vernix〕），属漆树科或腰果树科，也称作毒接骨木。原产于北美洲东部沼泽酸性土壤中。