测量仪器

The relation between mean square error and the characteristics of the measurement system is derived.

推导了动态测量的均方误差与测量信号和仪器特性的关系，明确了动态测量误差的各种成分，动态测量误差与静态测量误差的区别及联系。

To 6500m a.s.l.. In September 1998, an 80.36m ice core was also recovered in accumulation zone of the East Rongbuk Glacier on the northern slope of Mount Everest. The ice core was dated by seasonal variations of δ〓O (measured by Mat-Plus gas isotopic mass spectrograph with precision of 0.5‰) and major ions (measured by DX-2010 ions chromatography with precision of ng/L), together with the references of β activity peaks. Annual net accumulation was reconstructed based on the dating and density profile of the ice core.

此外，笔者还参加了1998年9月东绒布冰川80.36m冰芯的钻取工作。1999-2000年，在实验室内对上述样品进行了δ〓O测量(在中科院寒区旱区环境与工程研究所冰芯与寒区环境开放研究实验室用Mat-Plus气体稳定同位素质谱仪测量，以δ〓O平均值为-20.05‰的希夏邦马峰地区大气降水作为标准水，测量精度为0.5‰)、主要可溶性阴阳离子浓度的测定(在美国新罕布什尔大学气候变化研究中心进行，测试仪器为DX-2010型离子色谱仪，其测量精度可达ng/L)以及β活化度的测量(在美国新罕布什尔大学气候变化研究中心进行)，并以此为基础尝试重建了该冰芯的年代和净积累量。

Flocculation+0.45μm filter is selected as the pretreatment of the method proposed here.(9) A set of standard methods for ASMs COD characterization is suggested in the thesis and it advantages are:①Respirometry is adopted to measure RBCOD and SBCOD;②SI is determined from raw wastewater and so there is no influence of inert products;③Heterotrophic biomass in wastewater is measured;④The key instrument used in the standard methods-hybrid respirometer, has high automatic level and friendly user interface which simplifies the respirometry. So the suggested standard methods are practical.(10) According to the suggested standard methods, the influent COD of a wastewater treatment plant in Chongqing, China, is characterized.

9提出一套表征城市污水COD组分的标准化方法建议，其特点在于：①以呼吸测量作为RBCOD和SBCOD的测量方法，与以往以物理化学方法为主的做法有着本质区别；②对原水直接进行分析测试来获得SI组分，不受溶解性惰性产物的干扰；③考虑了污水中活性异养微生物组分的单独测量；④所依赖的核心仪器-呼吸测量仪具有很高的自动化程度和简单友好的用户界面，使原本复杂的呼吸测量实验及其结果的分析统计简单化，所建议的标准化方法具有很好的实用性。

In addition to these gages for product internal threads, the Standard also covers differential gaging and such instruments as pitch micrometers, thread-measuring balls, optical comparator and toolmaker's microscope, profile tracing instrument, surface roughness measuring instrument, and roundness measuring equipment.

除了这些测量产品内部螺纹的量规之外，这个标准还涉及了不同的测量方法及仪器，如螺距千分尺，测量螺纹的球，光学比较仪，精密工具制造者用的显微镜，剖面扫描图仪，表面粗糙度测量仪，及圆度测量仪。

Is a production, sales agent service companies, Main Products and Services: constant temperature and humidity box; walk-in constant temperature and humidity room; salt spray test chamber; temperature shock test chamber; simulation of motor transport Test Units; Vibration Test Units; Units drop test; tensile testing machine; sclerometer; combustion test machine; electrical appliances and machine attachment test equipment; wire and cable and cable test equipment; microscopy; digital projector; image measuring instrument; coordinate measuring machine; voltage tester; Oscilloscopes; program-controlled variable frequency power supply; EMC instruments

惠尔仪器公司是一家集生产、代理销售为一体的服务性公司，主营产品和服务：恒温恒湿箱；步入式恒温恒湿室；盐雾试验箱；温度冲击试验箱；模拟汽车运输试验台；振动试验台；跌落试验台；拉力试验机；硬度计；燃烧试验机；电器产品附件及整机试验设备；电线电缆及连接线试验设备；显微镜；数字式投影仪；影像测量仪；三座标测量机；耐压测试仪；示波器；程控变频电源；EMC仪器等

The temperature measure is a main parameter in modern industry produce process, especially in large enterprises high-voltage bus. Due to bus temperature need be controlled on time, there is not daces which measure bus temperature at present. Adopted artificial measure, measure it every a section of time at interval, cannot reflect the temperature on time. It is very in convenient.

温度测量是现代工业生产过程中的一个主要参数，特别是大型企业的高压母线上的温度测量，由于母线温度需要及时的控制，目前没有合适的测量母线温度的仪器，采用人工测量，每间隔一段时间测量一次，不能反映温度的及时变化，十分不便。

The wavelength of the instrument used to measure the change in absorbance of dosimeters and the instrument used to measure their thickness should be subject to regular checks of calibration at intervals established on the basis of stability, purpose and usage.

用来测量辐射量测定器吸光率改变的仪器的波长和用来测量它们厚度的仪器应定期进行校验，按照根据稳定性，目的和用途为基础建立的时间间隔进行。

First, based on the measurements of absorption cross-section, the absorption characters of the main polluted gases in flue gas were deeply studied, and found that SO_2、 NO、 NO_2、 NH_3 had a character of approximate periods absorption at some wave band, which is a good chance of a new measurement introduced. Secondly, the factors about absorption cross-section of the gases measured, which affect on the measurement precision of DOAS, is studied deeply. The influence of pressure and temperature on absorption cross-section was given special research, and the compensated measures were given to the gases based on the character of the gases. Thirdly, in practical measurement, it must have been satisfied that the monochromator was consisted with the reference spectrum, which was based on absorption cross-section. In order to satisfy the consistency, the technique of reversion in the image was introduced, the reversions of spectrums were realized with wiener filter and noise elimination based on wavelet transform.

首先从吸收截面的测量入手，对烟气中主要的污染气体SO_2、NO、NO_2、NH_3的吸收特性进行详细研究，发现这些气体在局部区域具有准周期吸收特征，这为引入新的测量方法提供了契机；其次，对决定DOAS测量精度的被测气体吸收截面的诸多问题进行了深入研究，重点研究了压力、温度对被测气体吸收截面的影响，并针对被测气体的特征提出了相应的修正措施；再次，在实际测量中，要求所使用的光谱仪必须与以吸收截面为基础的参考光谱相匹配，为了满足匹配这一条件，文中将图像复原技术引入到光谱复原，使用维纳滤波和小波消噪实现了光谱的复原，将复原后的光谱与所使用光谱仪的仪器函数卷积，即可实现；最后，在对DOAS测量原理详细分析的基础上，对传统的最小二乘—差分吸收光谱法进行了详细的阐述，通过实验证实两点：1。

Thestandard optical pyrometer of this pyrometers is the standard instrument used at thehigh temperature zone of the international practical temperation scale,But wanting to have the meas-ured temperature,the value of the effective wave length must be determined.

光学辐射高温计是高温测量中精度最高的仪器，其中的基准光学高温计是国际实用温标高温区的标准仪器，但欲得到被测温度，需确定有效波长值，本文探讨了影响有效波长的因素及其计算方法，并讨论了它对测量精度的影响。

Based on the test of practical measure of laser water-level gauge, the error is less than 0.6mm in the measure range less than 5 meters. Compared with other field water-level measure apparatuses in common use, the precision of laser water-level gauge has obvious improvement. And this gauge can also be applied to physical modeling experiment in river engineering.

4研制开发的激光水位仪经实测检验，在5米测距范围内，测量误差小于0.6mm，比常用的野外水位观测仪器的精度有明显的提高，该仪器亦可用于河工模型试验的水位测量。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。