查询词典 phenol-phthalein

Because of its irritating effect on humans, the use of phenol as a ge neral antiseptic has been largely discontinued.

由于苯酚对人体带有刺激性作用，它基本上已不再被当作常用的防腐剂了。

Acetone is also an important basic organic material, being used in the manufacture of methyl methacrylate, bisphenol A, methyl isobutyl ketone, and also in the production of cellulose acetate tablets, solvents for pla,stics and paints, and the solvent dewaxing for petroleum refining. In 2006, the production ability for phenol was 610,000 tons per year in China, the output was 520,000 tons, and the appearance consumption was 752,000 tons.

丙酮也是重要的基本有机原料，它用于制造甲基丙烯酸甲酯、双酚A、甲基异丁基酮等，用于生产醋酸纤维素片、塑料和涂料的溶剂以及石油炼制的脱蜡溶剂。2006年，我国苯酚生产能力61万吨/年，产量52万吨，表观消费量75.2万吨。

But in the timber industry of our country, most of adhesives are Urea formaldehyde resin adhesive, phenol-formaldehyde resin adhesive and melamine formaldehyde resin adhesive which used formaldehyde as raw material.

在我国木材工业中，木材胶黏剂主要是以甲醛为原料的脲醛树脂胶黏剂、酚醛树脂胶黏剂和三聚氰胺-甲醛树脂胶黏剂。

This paper discussed some technical problems affected the quality of product,such as modifier proportioning in producing of cashew shell oil and melamine modified phenol resin,estimating of reaction terminal point and rinsing of reaction product.

探讨腰果壳油和三聚氰胺改性酚醛树脂生产中改性剂配比、反应终点判断和反应产物水洗等影响产品质量的技术问题，提出了解决问题的有效措施。

RNA was extracted with acid phenol-chloroform and precipitated with isopropanol.

RNA中酸性酚-氯仿和沉淀与异丙醇。

Method］ Take foramen magnum resin D101 to separate polysaccharide from the zymotic fluid of Cordyceps mycelium, the phenol-SO2 method to measure polysaccharide in sample.

因此，从20世纪70年代起，人类就开始利用现代生物发酵技术培育虫草菌丝体［1］来代替天然虫草，但，目前对虫草菌丝体发酵液的开发利用，国内外还是鲜有报道。

Compared with the traditional method, this new method has some advantages:①centrifugation is not necessary, therefore, separation of high molecular weigh DNA is possible;②phenol, chloroform and other toxic organics are not needed;③separation is more efficient and less timeconsuming④the quality of DNA isolated in this way is very high.

当样品裂解液与杂交液1：1混合并用磁性微粒进行小麦黄化苗和种胚的DNA分离与纯化时，效果非常理想。与传统的纯化方法相比，该法具有①快速、简便；②无有机试剂污染；③无需离心分离；④得率和纯度均较高等优点。

The phenol extraction of genomic DNA from alcohol-preserved caudal fin is an effective method of promoting and using in molecular studies on fish.

综合比较，苯酚/氯仿抽提法提取乙醇保存的尾鳍组织基因组DNA是一种行之有效的方法，可以在鱼类分子研究中推广应用。

Electrocatalytic oxidation is further carried out in the presence of the ·OH radical scavenger tert -butyl alcohol, which indicates that both direct and indirect oxidation are responsible for the degradation of phenol.

加入·OH清除剂叔丁醇的研究表明，本体系中苯酚的电催化氧化是由直接氧化和间接氧化的协同作用共同去除。

It was found that with the Ni-Zr-Ce/Al2O3 catalyst prepared in present work the production of aniline from benzene, hydrogen peroxide and aqueous ammonia could be realized under mild conditions, that is, at about 50 °C and under atmospheric pressure, and the selectivity of aniline is much higher than that of phenol.

发现在常压、50 ℃的温和条件下，该催化剂对苯、氨水与 H_2O_2直接氧化胺化生成苯胺有较好活性，并且其对苯胺的选择性远远大于对苯酚的选择性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。