高灵敏度的

The current developments were summarized and the research contents of this thesis were described.In the second chapter, a simple procedure is described for the simultaneous extraction and determination of betulin and betulinic acid in white birch bark. To compare extraction efficiency, effect of white birch bark growing in different locations and different extract solvents on the content of betulin and betulinic acid were evaluated.

第二章建立了一种简单、准确度、灵敏度高和重现性好的RP-HPLC同时测定白桦树皮中白桦酯醇和白桦酯酸含量的方法，并用这种方法研究了提取溶剂以及产地对树皮中白桦酯醇和白桦酯酸的含量影响，确定了最佳的提取工艺。

The cylindricity could be calculated by least squares method and wavelet error separation method that the measurement error could be decomposed by Harmonic analysis algorithm based on wavelet theory.

针对激光 CCD 灵敏度高，干扰噪声容易混入测量数据中的问题，提出了一种基于小波分析的误差分离方法，即运用谐波分析的思想方法和小波理论中多频率分析算法进行误差分离，误差分离后的数据用最小二乘法处理求出圆柱度。

After testing, it was proved that this new Eustachian tubes Function Instrument is stable and easy-to-use. It is expected that it will have a good potential application.

研制出的可用计算机控制的新型咽鼓管功能测定仪的样机，经试验，操作性能好，灵敏度高，具有良好的应用前景。

The results showed: Fragilaria brevistriata had the highest average difference in temperature to respond to heavy metals, it was 0.24 ℃ that was 0.05 ℃ high more 0.19 ℃ of together average difference in temperature of eight kinds of algae to respond to heavy metals; The percent of Fragilaria brevistriata responding better to the reagents was 80% that was the highest in eight kinds of algae; The average response time of Fragilaria brevistriata responding to the reagents was 4.65 min that was low more 5.21 min of together average response time of eight kinds of algae; Fragilaria brevistriata' sensitivity was between 0.06 mgL^(-1) and 7.0 mgL^(-1), and the luminescent bacteria' sensitivity was between 0.07 mgL^(-1) and 15.3 mgL^(-1), so Fragilaria brevistriata had lower dose to respond to the heavy metals.

结果表明：平均响应温差短线脆杆藻最大，为0.24℃，高出8种藻的0.19℃总平均温差0.05℃；较好药品响应率短线脆杆藻最高，为80%；平均响应时间短线脆杆藻居中，为4.65min，低于8种藻的总平均响应时间5.21min；短线脆杆藻对重金属的灵敏度在0.06~7.0mgL^(-1)之间，发光细菌在0.07~15.3mgL^(-1)之间，表明短线脆杆藻对重金属响应的剂量低。

MWNT/GC showed the better catalytic effect on myricetin and the high sensitivity to the determination.

多壁碳纳米管对杨梅酮有良好的催化活性，MWNTs/GC对于测定杨梅酮呈现良好的响应特性和较高的测定灵敏度，该传感器应用于杨梅酮的分析。

This epoxy-optical model of unilateral maxillary defects with high sensitivity and visual acuity could well meet the demand of the photoelastic experiments.

建立的单侧上颌骨缺损的环氧树脂光弹模型光学灵敏度高，直观性强，能很好的满足光弹实验的要求。

It is important to analyzing experimentation's results The results of blood model test indicated that this system can measure the changes of blood volume and oxygenation with a high responsivity.

对该系统进行血液模型实验，实验结果表明该系统能够正确反应血液中血氧和血容的变化，并且具有较高的灵敏度(当实际血容变化约7%，测量到的以光密度表示的血容变化为0.1)。

The high-performance liquid chromatography with UV detection was developed for quantifying the concentration of DM in intestine perfusing solution .

DM浓度在0.1～100μg/ml范围内呈线性关系，相关系数大于0.9943，定量限约为1ng，各生物样品中的DM和TMPH的提取回收率均在90％以上，DM的日内、日间RSD均小于7％，方法准确可靠、方便快捷、灵敏度高、专属性强，很好地满足了本文中的各项分析要求。

The result indicates that the GoldMag? particles based chemiluminescence immunoassay for TP antibody is more sensitive, reliable, and easier method without radioactive pollution. The detection system provides a premising method in syphilis screening and clinical diagnosis.

以金磁微粒为载体的TP抗体磁酶免化学发光法具有灵敏度高，操作简单的优点，该方法对标准血清盘的测试仍在进行中，方法在血站筛查及临床检测领域具有潜在的应用价值。

Methods:The resonance light scattering spectrum of cetyltrimethyl ammonium bromide in alkaline medium was enhanced significantly in the presence of CuS/S~(2-) solution.

共振光散射技术是近年发展起来的一种新的分析技术，它具有简便快速、灵敏度高的特点，已用于痕量Cu元素的分析[1]。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐