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TiO2 is known to exist in three distinct structures: two tetragonal phase for anatase and rutile and a third orthornombic phase for brookite. Rutile has the most stable structure and physical and chemical properties. In rutile structure oxygen cavities move quickly so that rutile has better gas sensing respond and become a chief material use for oxygen gas sensors.

其中金红石结构是最为稳定的晶型,不但具有最为稳定的物理、化学性能,而且在金红石结构中,晶格中氧空位的迁移率较高,因而TiO_2金红石结构气敏响应效应较好,从而使金红石结构TiO_2氧化物材料成为氧敏传感器的首选材料之一。

When after your bath, with wet hair spread on your shoulders, you walked through the shadow of the champac tree to the little court where you say your prayers, you would notice the scent of the flower, but not know that it came from me.

而面对好友,再好面子如妈妈我也给她争不到这个气了,任她在外多长袖善舞,回家到我这里还是一筹莫展,她的动粗、高嗓门似乎都因我而起、拜我所赐。

Reductive conversion of geraniol to citronellol is adopted as a model reaction, and several factors in the reaction are discussed using gas chromatography method. The influence of n-hexane and butyl acetate, as organic solvents, on biocompatibility was studied; the influence of methanol, ethanol, glycol, n-butanol and 1-hexanol, as energy substance, on the transformation efficiency was compared, respectively; the catalysis capabilities of Baker's yeast, XST-KO yeast, LP yeast, alcohol yeast, dry yeast, Saccharomyces cerevisiae, Angel yeast and Meishan yeast were discussed. It has been proved that biocompatibility of n-hexane are much better than that of butyl acetate, and the hexane has been demonstrated the most effective in terms of the influence on biotransformation, Baker's yeast has shown the highest tranformation efficiency among the eight yeast strains.

以香叶醇转化为香茅醇作为模型反应,通过气相色谱法进行定性和定量分析研究了影响该有机相生物转化反应的几个基本因素,考察了两种有机溶剂正己烷和乙酸丁酯对生物相容性的影响,选用甲醇、乙醇、乙二醇、正丁醇和l-己醇分别作为能量物质进行实验,比较其对转化的影响并探讨了Baker's酵母、XST-KO酵母、LP酵母、酒精酵母、假丝酵母、干酵母、安琪酵母和梅山酵母八种不同酵母作为生物催化剂对模型反应的催化能力,结果表明,正己烷作为有机溶剂,其生物相容性明显好于乙酸丁酯,更加有利于该生物转化反应进行;乙二醇作为能量物质,该模型反应转化率最高;而 Baker's酵母作为生物催化剂,对该模型反应的催化能力最强,最适合作为该模型反应的催化剂。

In order to resolve the consistency problem, the semiconductor planar technique is adopted to fabrica.

本实验尝试使用了半导体平面工艺制作气敏元件,以解决元件一致性方面的问题,同时要求元件有较好的灵敏度等特性。

The method, which is capable of effecting very good separation of phenol and the 3 cresol isomers under the same chromatographic conditions, can be used to determine phenolic compounds in phenolic tar by external standard, and to analyze these compounds in the toxic leaching solution of the tar.

摘 要:建立了酚焦油中酚类物质质量分数测定和浸取毒性测定的气相色谱法,此法可以在同一色谱条件下对酚焦油中的苯酚及邻、间、对甲酚实现很好的分离,利用外标法分别进行定量分析,并对酚焦油浸取液中相应组份进行测量。

All right then.'said the girl crossly.

"那麽好吧。"女孩恼气的说。

It was proved that the application of 300KA electrolysis cell program can largely improve several aspects of index in the course of operation, which can be described as follows: 1. The cell situation is stable and easy to operate, it can cut down cells opening to exchange two anodes every time, which makes cells more closely.

事实证明,采用300KA级电解槽方案的各项指标有较大幅度的提高,主要表现在以下几个方面:1 槽况稳定,易于操作,采用每次换两块阳极的方法,减少了开槽次数,使电解槽密闭性能好,集气效率有较大提高。

The Tripolycyanamide salt(including melamine phosphate、melamine pyrophosphate and melamine cyanurate )is consisted of acid source and gas source and their fire retarding performance is high .

三聚氰胺盐(常见的有三聚氰胺磷酸盐、三聚氰胺氰尿酸盐)集酸源、气源于一体,具有很好的膨胀阻燃效能。

The cylinder head intake and exhaust ports and intake and exhaust manifolds are shape optimized for better volumetric efficiency .

气缸盖进气和排气的港口和进气口和排气管的形状更好的容积效率的优化。

Parts production from the beginning, he would line depth production, meticulous organization, and strict requirements, so a single-engine queries for a minimum quantity, plant, engine plant, through a gas-tight test of a good score.

从零件投产开始,他就深入生产一线、精心组织、严格要求,做到了发动机办理的质疑单数量最少,厂内、厂外发动机气密试验一次通过的好成绩。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。