高灵敏度的

A sensitive spectrophotometric method for the determination of trace amounts of chlorine dioxide based on the fading reaction of chlorophenol red by chlorine dioxide has been developed in the alkaline solution.

在弱碱性条件下，二氧化氯(ClO2 )氧化氯酚红使其褪色，于 5 75nm波长处测定剩余氯酚红的吸光度，当用试剂空白参比时，吸光度的降低值与ClO2 的浓度呈直线关系，其它氧化剂在测定条件下无干扰，方法有较高的灵敏度和很好的选择性。

Primary tests of the device show that it has low dark current, high spectral sensitivity, very fast response speed, and quite small crosstalk between its neighbouring units.

通过对其主要的性能进行的特性测试表明，该探测器具有较低的暗电流、较高的光谱灵敏度和较快的时间响应，并且相邻单元之间的串扰也很小。

Because the majority of the Vibrio parahaemolyticus are halophile and utilize arabi-nose as a carbon source to produce typical yellow colonies on the SAC medium,whereas most of closely related species can produce only greenish minute colonies,the growth of usual marine microflora can be inhibited.

在检测方法上，改进了一种选择性较强的培养基，经实验表明，SAC培养基较其他常用的几种培养基对付溶血性弧菌检出的阳性率和灵敏度均较高，与普通采用的TCBS法比较，x~2=4.28，ρ。05，有显著效果的意义。

Determination of hydrogen chloride in air by ion chromatography was developed, the collection of sample and conditions of determination were investigated.

用离子色谱法测定环境空气样品中的氯化氢，建立了该空气样品的氯化氢采集和离子色谱分析的条件，并将该分析方法与常用的硫氰酸汞分光光度法相比，具有操作简便、快速、灵敏度高的特点。

In this paper, the size and structure of the uniplanar scattering-field capacitance sensors are optimally designed by simulation and experiment for test depth and testing feature with guard electrode for improving the anti-disturbance capability. A new uniplanar scattering-filed capacitance sensor for measuring water in building inclosure is designed based on improved charge/discharge capacitance measuring circuits. This kind of sensor has wide test depth and high sensitivity.

针对围护结构含水率测试深度的要求和测试特点，本文通过仿真和实验，对同面电容传感器探头的结构尺寸进行了优化设计，并采取了保护电极以提高其抗干扰能力；运用改进的充放电电容检测电路，设计出一种测量围护结构含水率的新型同面散射场式电容传感器，该传感器具有宽范围的测试深度和较高的测试灵敏度。

One of these testing methods, eddy current, has been widely used for metal thickness measuring because of its good sensitivity, high test speed , non-contact and other advantage. The principle of eddy current testing is that, when the test coil is close to the metal conductor with alternating current, the eddy current would be inducing in the conductor, and correspongdingly, the eddy current would affect the original magnetic field, the result is the coils impedance and inducing voltage changed.

其中涡流无损检测技术具有灵敏度高、检测速度快、非接触等特点而广泛应用于金属厚度检测，它的原理是当载有交变电流的检测线圈靠近金属导体时在导体中产生涡流，该涡流又影响原磁场，使得线圈的阻抗和感应电压发生变化，通过分析阻抗或感应电压的变化来获得被测导体的信息。

LED or photo aging components: the core of IC optical mouse has a constant internal integrated circuit, the LED constant current of about 50mA, the general use of the mouse high-grade intermittent sampling technique, sent intermittent conduction current is the (sampling frequency of about 5KHz), can be in the same power under the premise of testing to enhance the power LED, the high detection sensitivity.

1发光管或光敏元件老化：光电鼠标的核心IC内部集成有一个恒流电路，将发光管的工作电流恒定在约50mA，高档鼠标一般采用间歇采样技术，送出的电流是间歇导通的(采样频率约5KHz)，可以在同样功耗的前提下提高检测时发光管的功率，故检测灵敏度高。

Biology technique is based on appearance symptom on sweet potato or Ipomoea Setosa after they are infected to identify virus. But it need long period and is apt to be limited by season. Based on coat protein of virus, serology detects virus during peculiar immunolog...

生物学方法是依据病毒侵染后在甘薯或指示植物上的外观症状进行识别，但检测速度慢，易受季节限制；血清学技术是利用病毒外壳蛋白的抗原性，据特异性的抗体抗原免疫学反应检测病毒存在，但制备抗血清需时间长，对含量少和无蛋白外壳的病毒无法检测；分子生物学方法是以核酸为基础，通过检测病毒核酸来证实病毒的存在，该技术具有灵敏度高、特异性强、适应范围广等特点。

Biology technique is based on appearance symptom on sweet potato or Ipomoea Setosa after they are infected to identify virus. But it need long period and is apt to be limited by season. Based on coat protein of virus, serology detects virus during peculiar immunology reaction of antibody and antigen. But it can't detect virus without CP and preparing antibody need more time. The molecular biology method is based on nucleic acid to detect virus. This technique has high sensitivity, strong veracity, wide suitability etc.

生物学方法是依据病毒侵染后在甘薯或指示植物上的外观症状进行识别，但检测速度慢，易受季节限制；血清学技术是利用病毒外壳蛋白的抗原性，据特异性的抗体抗原免疫学反应检测病毒存在，但制备抗血清需时间长，对含量少和无蛋白外壳的病毒无法检测；分子生物学方法是以核酸为基础，通过检测病毒核酸来证实病毒的存在，该技术具有灵敏度高、特异性强、适应范围广等特点。

It also classifies them in accordance with the compound method of triazene reagents as follows: reagents diazotizated with sodium nitrite and muriatic acid, reagents diazotizated with nitrosyl positive ion, reagents diazotizated with n-butyrate nitrite.These reagents with high sensitivity and good choice have been widely applied to the determination of microa mounts of cadmium and...

按三氮烯类试剂合成的方法进行分类，分别为在亚硝酸钠和盐酸作用下重氮化的试剂，在亚硝酰正离子作用下重氮化的试剂，在亚硝酸正丁脂作用下重氮化的试剂，此类试剂灵敏度高，选择性好，广泛应用于被镉、汞等过渡金属离子污染的环境样品的分析中。

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