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Using triethanolamine and thionyl chloride as raw materials,tri-(3-chloroethane)amine is synthesized by substitution reaction in the presence of solvent chloroform.

以三乙醇胺和氯化亚砜为主要原料,通过取代反应合成三(2-氯乙基)胺,再在氮气的保护下,经过与对羟基苯甲醛反应,生成三胺,探讨了合成反应的工艺条件。

In order to improve ability of anti-jamming, nowadays output of many measure-control systems' sensor is three thready difference signal and differ voltage range. Commonly, this signal is transacted by complex circuit , then it is collected. In this way, hardware cost of system is increased and precision of system is reduced.

现在很多测控系统为了提高抗干扰的能力,传感器输出信号多为3线制的差分信号,而且电压范围也不同,通常采用的方法是把差分信号通过复杂电路进行处理后再进行数据采集,这样不仅增加了硬件成本,还使系统的精度降低。

Dynamic video frequency color images is the subject investigated of this algotithm.Firstly, by making the best of tinct information, the face region, of which complexion is concentrative and steady, is segmented through color space conversion. In this way, the range where faces are to be searched is reduced. Secondly, multi-template matching,mosaic image validation and geometric rule affirmance are combined to detect faces. Compared with the only one method, the false detection ratio of this multiple method is reduced further more.

本算法以动态视频流彩色图像为研究对象,首先充分利用人脸面部的颜色信息,通过色彩空间变换,将肤色相对集中与稳定的人脸面部区域分割出来,这样大大缩小了后续人脸检测的搜索范围;然后再利用多模板匹配、镶嵌图验证和几何规则确认等几种方法相结合来检测人脸,与单纯仅用一种检测方法相比较,进一步降低了该算法的误检率。

Pt-inserted nanotube titanic acid was prepared as follows: H_2PtCl_6 ethanol solution was filled into the titanic acid nanotubes and then annealed in air at 673 K for 3 h.X-ray photoelectron spectroscopy showed that H_2PtCl_6 has been converted to Pt~0 and PtO.The result of electron spin resonance revealed that there are single-electron-trapped oxygen vacancies to be formed in PNTA after heat treatment in air.

通过在真空条件下将氯铂酸的乙醇溶液引入到钛酸纳米管内,再经过热处理制备了镶嵌铂的纳米管钛酸。X射线光电子能谱表明氯铂酸大部分转变成Pt0和PtO,顺磁共振谱表明在PNTA中生成了束缚单电子的氧空位,在紫外-可见扩散漫散射谱谱上表现出对可见光有吸收能力。

Through the design of AGP-test equipments and methods which could simulate the impact of input of exogenous nutrients on eutrophication, the evolution of algae and aquatic species extinction process in Miyun Reservoir under different environmental and nutritional conditions are simulated. Then the ratio growth rate in the three simulation stages are simulated and analyzed combining the numerical analysis software MATLAB 7.0. At last, the conclusion that in the three designed stage, the total phosphorus threshold which leads to a water bloom in Miyun is respctively 0.053mg/L, 0.062mg/L, 0.064 mg/L is educed. Based on the regression relationship of total phosphorus,chlorophyll-a, total nitrogen, and the transparency,we compartmentalized the evaluation standard level of eutrophication in Miyun Reservoir.

通过设计模拟外源输入对富营养化作用的AGP试验装置和方法,模拟了不同环境条件、营养条件下密云水库优势藻种演变和富营养化过程,结合使用MATLAB 7.0数值分析软件,对3期模拟时段的比增长率进行拟合分析,得出3期设计阶段密云富营养化发生的总磷阈值为0.053mg/L、0.062 mg/L、0.064 mg/L,再根据总磷与叶绿素a、总氮、透明度之间的回归关系,划分了密云水库富营养化的评价标准级别。

Through to old construction space inspection and analysis,it has pointed out the old construction in the regional function,as well as with uses again under the new engineering factor transformation,and proposes under the new technical spatial transformation way,in order to offer a reference for regional space reconstruction desigh engineering of old buildings.

通过对老建筑空间的考察与分析,指出了老建筑在地域性中的作用,以及在新技术条件下的改造与再利用,并提出在新技术下的空间改造方式,可供老建筑地域性空间改造设计工程参考。

The oleoyl chloride was prepared by the reaction of phosphorus trichloride and oleic acid.

通过油酸和三氯化磷反应制备了油酰氯,再用油酰氯与谷氨酸单钠盐反应制备了目标产物油酰-L-谷氨酸。

To illustrate the making method of filter,recording with one colour wave and perpendicularly reconstructing with different peakwavelength,the trichromatic filters have been made.

通过三基色滤光片的制做,总结了用单色波长记录,而垂直再现时得到不同峰值波长的滤光片的方法。

General operation needs the left and right sides half hours only, disinfect the vulva and shade road junction first normally, go next local soak is anaesthetic, reoccupy ophthalmology cuts the Hymen rent go out to achieve a predestined relationship trimly, use can absorb suture fine fine suture, make Hymen leaves the hole that passes one little finger only, need to be handled according to particular case diminish inflammation everyday after art in order to prevent infection, do not need take out stitches.

一般手术仅需半小时左右,通常先消毒外阴部和阴道口,然后行局部浸润麻醉,再用眼科剪将破裂处的处女膜剪出整齐的创缘,并用可吸收缝线细细的缝合,使处女膜仅留通过一小指的孔,术后每天需根据具体情况消炎处理以预防感染,不需拆线。

Methods One hundred and eight Sprague-Dawley rats were divided into three troops: the troop of flaps, the troop of grafts and the troop of fat with thirty six of each.

将带有PCD-VEGF165的大肠杆菌接种到LB培养基中,通过碱分裂法制备PCD-VEGF165质粒,再用反蒸发法将质粒包埋于脂质体中。

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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。