灵敏度分析

The Poly Vinylidene Fluoridemembrane was chosen to produce ultrasonic in transducer due to its higher sensitivity and better flexibility than other piezoelectric material.At the mean time,harmonic analysis to the PVDF film vibration was performed using ANSYS.The results show that the PVDF membrane can produce an ultrasound with afixed resonance frequency.

对各种压电材料进行比较分析，得到聚偏二氟乙烯膜比其它材料具有更高灵敏度和更好柔韧*，通过对其振动特*进行有限元分析，得到PVDF膜在固定频率具有振幅最大值，可知PVDF膜更适合做声频定向超声波传感器的振动膜来进行声音传播的方向控制。

The effects of hapten structure on antibodies properties and hapten heterology on ELISA sensitivity were also investigated. The results show that haptens with simple spacer-arm can generate antibodies with desired properties, and hapten heterology can improve ELISA sensitivity significantly.

建立检测硫代磷酸二乙酯类农药的间接竞争酶联免疫分析方法，分析探讨了免疫半抗原结构对抗体特性的影响，并阐述了包被半抗原结构对ELISA灵敏度的影响规律。

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。

The sensitivity characteristics of the natural vibration frequencies and mode shapes of vibration structures with respect to mass and stiffness modifications are analysed based on the matrix perturbation method of the linear generalized eigenvalue problem.

基于线性广义特征值问题的矩阵摄动重分析公式，较为系统地分析了振动系统各阶固有振频及固有振型随结构质量和刚度的修改的灵敏度特性，得出了一系列具有重要实用意义的结论，指出了对结构进行摄动修改的最灵敏位置。

The product is used both medicament box of microplate luminometer and software of analyze a management system,which can be used many aspects in medically and immunity analysis.

该产品与发光免疫分析试剂盒和专用的免疫数据分析管理系统配合使用，能够满足各类临床及基础医学领域内高灵敏度定量和定性免疫测试的要求。

Based on the Maximum Likelihood receiver principle,Coherent-Noncoherent integration is analyzed. It has serious square loss Characterization, especially in real data. Differentially coherent integration algorithm which is frequently used in spread spectrum communication is analyzed in detail for high sensitivity signal detection.

基于最大似然接收机原理，详细分析了相干-非相干(Coherent-Noncoherent)积分算法，表征出该算法在高灵敏度条件下由于非相干次数增加带来的平方衰减，实测数据的分析证实了这个问题更为严重。

It uses ammonium molybdate spectrophotometric method determination of element phosphorus in waste water.

利用钼酸铵分光光度法测定了水样中的元素磷，发现该方法的灵敏度、准确度和稳定性都可以满足分析的要求，并且用元素磷标准样品进行了对比实验，分析误差在10%以内。

Total inorganic phosphates and orthophosphate were determined with satisfactory sensitivity for real sample analysis, and with sampling rates of 40 and 80 per hour, respectively. The obtained sampling rates were much higher than the existing automatic methods (20 per hour).

总无机磷酸盐和正磷酸盐进样频率分别为40和80样次/小时，远远高于现有的自动分析方法（20样次/小时），方法的灵敏度能够满足实际样品分析的要求。

The method of using formaldehyde buffer solution a b sorption-hydrochloric pararosaniline spectrophotometry to determine sulfur diox ide in air has higher sensitivity and good selectivity,and prevents from adoptin g mercurial absorbent.But the conditions in lab are not well controlled,the v alue of reagent blank and standard curvilinear slope can't accord with the one s tipulated in"Methods for Air and Waste Gas Monitoring and Analysis".Some opra tional techniques for SO2 determination in lab are introduced for reference.

文摘：以甲醛缓冲溶液吸收-盐酸副玫瑰苯胺分光光度法测定空气中的二氧化硫，方法灵敏度高，选择性好，避免了使用含汞的吸收液，但如果实验条件控制不好，试剂空白值及标准曲线的斜率就会不符合《空气和废气监测分析方法》中规定的值，本文着重从操作技巧方面对二气化硫测定的实验室质量控制进行分析，仅供参考。

Electroannalytical methods are characterized by cheap, high sensitivity and selectivity,especially the stripping voltammetry and catalytic polarography.

电化学分析一直是十分活跃的领域，其中的极谱法以其灵敏度高、选择性好及设备简单、价格低廉而倍受广大电化学分析工作者的关注和重视。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。