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1)  comparing measurement
比测
1.
By comparing measurement of multi-beam sounding system, single-frequency depth sounder and digital depth sounder, the article analyses causes of error and precision for the system.
通过对多波束测深系统、单频测深仪及数字测深仪比测实验,分析其误差来源和精度,验证了在特殊的水下地形测量过程中,多波束测深系统配合单频测深仪可以完成测量任务,从而为多波束测深系统应用空间的拓宽提供科学的依据。
2.
By making comparing measurement between WQC–1 type bubble water level gauge and ?oat type water level gauge at different water levels in Lishi hydrological station, it has proven that bubble type water level gauge has higher precision.
简要介绍了WQC-1型气泡式水位计的工作原理,通过对气泡式水位计在犁市水文站不同水位级应用条件下,与浮子式自记水位计进行比测,通过对比测资料进行分析,得出气泡式水位计测量水位精度较高,并提出气泡式水位计在应用过程中应注意的问题。
3.
Four hydrological stations of sandy and pebble bed section have been chosen to make depth , width and discharge comparing measurement experiments.
近几年来,新疆伊犁水文水资源勘测局先后引进6台EKL型水文缆道设备,并分别应用于不同特性的河流,选择沙质河床和卵石河床组成断面的四个水文站进行测深、测宽及流量比测试验,通过对EKL设备的测深、测宽功能及流量实测资料进行统计分析计算,分析了该设备在沙质河床和卵石河床河流上的应用。
2)  comparing measure
比测
1.
Some basic principles and method of the Calibration and comparing measurement of the ocean monitor device in spot are introduced detailedly here.
这里详细介绍了海洋监测仪器的现场校准比测基本原则和 方法。
3)  longtan formation
测井对比
1.
Longtan Formation Coal and Strata Correlation through Well Logging in Jinsha Coalfield,Guizhou Province;
贵州省金沙煤田龙潭组岩煤层测井对比方法
4)  colourimetric temperature measurement
比色测温
1.
The stationary location temperature is measured by colourimetric temperature measurement device.
研究弧焊机器人GMAW(Gas Metal Arc Welding,熔化极气体弧焊)动态过程,采用比色测温仪对温度场特定点温度进行采集,采用面积法对送丝速度和测温点温度之间的模型进行了辨识。
2.
The author has developed a kind of thermometer with single chip computer on the principle of colourimetric temperature measurement using optical fiber, which attains the performance of similar products from abroad.
根据光纤比色测温原理并采用单片机研制了光纤比色测温仪。
3.
The principle of colourimetric temperature measurement using NIRCCD was introduced, the selection method of minimal band width of filter slice and two colour wavelength are discussed in detail, and an ideal combination of wavelength in a given range of temperature is obtained by Matlab simulation.
介绍了近红外CCD比色测温的基本原理,详细讨论了滤波片最小带宽的选择以及比色双波长的选择方法,并通过Matlab仿真计算确定了在给定温度范围内的最佳比色波长组合。
5)  Comparative measurement
比较测量
1.
Comparative measurement using permanent magnet as reference source applied in Optical Current Transformer is proposed.
提出采用永久磁体作为参考源应用于光学电流互感器中 ,对随环境因素改变的材料Verdet常数及线性双折射进行实时补偿的比较测量法 运用矩阵光学理论对该方法进行了理论分析 ,并进行了相关实验 ,实验结果证明了该方法的可行性 设计的传感单元采用了点式传感头 ,具有结构简单的特点 ,适合于在高电压环境中应
2.
Calculating formulas of uncertainty and measurable tolerance grades for 1 grade outside micrometers in comparative measurement are proposed.
提出了采用比较测量时1级外径千分尺不确定的计算公式及其可测公差等级范围,从而为《光滑工件尺寸的检验使用指南》表1中给出的注①提供了理论依据。
3.
Based on the theory of radiometry, the measurement technique for linear response of ultraviolet ICCD (UV-ICCD) detector was studied and a comparative measurement method was presented.
以辐射度学为理论基础,研究了紫外ICCD(UV-ICCD)的线性测量技术,提出了比较测量方法。
6)  contrastive test
比对测试
1.
The selection and analysis of uniformity of devastating contrastive test sample were introduced and the uniformity of corrugated cardboard s marginal pressure strength was analyzed.
对瓦楞纸板边压强度测试进行均匀性分析,介绍了破坏性比对测试样品的选用和均匀性分析方法。
补充资料:pH指示剂吸光度比值测定法
分子式:
CAS号:

性质:采用容量法与分光光度法相结合的一种差示定量法。其原理为选择一种适当的酸碱指示剂,其酸式色和碱式色的吸收光谱和吸收度有显著的差别,且该指示剂的pKa值在某一酸碱反应的化学计量点的pH值附近,当酸碱滴定时,在酸式色和碱式色的最大吸收波长λ1和λ2处分别测得其吸收度Aλ1及Aλ2,计算吸收度比值r′(r= ),便可通过滴定中r的变化而准确测 定样品含量。该法除用于弱碱性药物的测定外,还可用于磺胺类、氨基酸等的测定。JP(9)已收载用于水杨酸钠、枸橼酸钠、氨基比林、无味奎宁、烟酰胺等药物的测定,《中国药典》(1985)也已收载用于枸橼酸钠的测定。

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