查询词典 measurement

The available methods of optial system in emulating system are compared with each other in this paper and the photo electrical measurement method is accepted to be the best one.Then,the practical scheme of photoelectrical measurement method and its mathematical models are given,and the measurement error of this method is also analyzed qualitatively.

本文对仿真系统中的光学系统的可能实现方法进行了比较，选择出其中较优秀的方法—光电测量法，给出了光电测量方法的实际实现方案和测量的数学模型，对此方法的测量误差进行了定性分析。

This paper describes the results obtained by a comparison of the measurement of mobile metals in overburdens, separatory electrogeochemistry , geogas measurement and soil measurement.

分别进行了金属活动态测量、地球气测量、地电化学测量、土壤全量测量。

Secondly, referring to the present study on the connotation of the medium-income group and its measurement of dividing, the paper puts forward the basis and method of the sexenary division of the citizens and defines of the medium-income group as a group of people whose income is just lower than the millionaire and billionaire, Similar to the "middle class" popular in the western countries in economy and politics. As tar as the measurement is concerned, the paper sets up the measurement considering both the quality and quantity on the basis of income. From the point of view of quality, the medium-incomes should be able to pay for the real estate, life-lone education, medical care and luxurious goods all or mostly by their personal income, inheritance or loan form banks. In addition, they should be capable of keeping their income rising steadily.

其次，结合当前学术界对中等收入者的内涵及其划分标准的研究现状，本文提出城乡居民六等分的依据和方法，将本文研究视野中的中等收入者概括为一类仅次于亿万富翁和百万富翁的高收入者，在经济特征上，类似于西方世界流行的&中产阶级&；在其划分标准上，确立了以收入作为划分不同群体的依据，衡量标准采用质与量相结合的方法，从质上看，中等收入者的收入应能全部或绝大部分通过借贷、继承等方式支付房产、教育、医疗、高档消费等支出，并具有可持续增长的收入能力。

Because how to improve the measurement accuracy of CT parameters is the key of low voltage method, the paper in detail introduces the electronic parameters measurement circuit, furthermore,the needed digital sinal source ,CT ratio measurement circuit ,the way of digital sampling ang sinal processing are emphasized in the paper.

文中详细介绍了CT 内部参数的测量原理及实现方法。在其中着重讨论了校验仪中所需的高精度测试信号源及变比测量电路的原理和实现、数字采样技术及数据的分析处理方法。

This paper introduced a single antioxidant extraction system--5% sulphosalicylic acid which could extract and assay ASA/DHA and GSH/GSSG simultaneously. Through analysis of kinetic curve of DTNB-GR recycling, the suitable time parameter was selected for the measurement GSH/GSSG. This system made the extraction of antioxidant quick and easy, and enhanced the accuracy, reproducibility and comparability for the antioxidant measurement through it compared to original method of extraction and measurement.

文章介绍了在一个单一提取系统—— 5 %磺基水杨酸中同时提取并测定了抗氧化剂 ASA/DHA和 GSH/GSSG，通过 DTNB— GR循环的动力学分析固定了 GSH/GSSG测定的最佳时间参数；通过与原提取和测定方法的比较，此法对于测定抗氧化剂有很好的准确性、重复性和可比性，使抗氧化剂的提取和测定变得简便快速。

Whether the inner cylinder is drilled or not do not affect obviously the measurement accuracy. The accuracy of the drilled outside cylinder is higher than the undrilled ones, and the drilled holes are better to be equally distributed, further more, the number is less than 36 with the diameter of 3mm. The sealed outside cylinder can lower the measurement accuracy. The thinner material of sealed inside cylinder is and the more ventilative function is, the higher accuracy will be achieved. Moreover, when the space between inside and outside cylinder is smaller, the measurement accuracy also becomes higher.

结果表明：各处理精度均较高，最高达97.40%；内筒打孔与否对测量精度无显著影响；套筒打孔的处理比不打孔的处理精度更高，且孔洞适宜均匀分布，但数目不可过多，直径为3mm时不宜超过36个；套筒封底会降低测量精度，内筒封底材料越薄、透气性能越好精度越高；内筒与套筒的间隔较小时精度更高。

As a tool of whole field , unintrusive and instantaneous measurement, PIV has been used widely in parameter measurement of liquid and multiphase and has good measurement precision.

作为一种全流场无接触瞬时测量的工具，PIV测量技术已经广泛地应用于流体及多相流参数的测量，而且具有较高的测量精度。

Effective network chain density measurement, dynamic mechanical spectrum measurement, wide angle X-ray diffraction and density measurement have been used to verify the compatibility of natural rubber/low density polyethylene blends (NR either unvulcanized or vul-canized) as predicted by the calculation and proposed model.

然后用动态力学方法、有效网链密度测定、密度测定和广角X-射线衍射方法对天然橡胶分别未交联和交联的天然橡胶/低密度聚乙烯共混体系的相容性进行了验证。

The output power could be adjusted with the change of control voltage, and the reflecting power could be gotten by measuring the output voltage of attenuator and detector. 4.The thrust measurement device was calibrated, and the accuracy was 2%FS. At the same time the signal of thrust measurement was input to the computer. E-type chromel-constantan thermocouple was used to measure the temperature of MPT, and the accuracy was 5%FS.The vacuum measurement was realized by using ZDF-5427M vacuometer, and the accuracy was 3%FS.

4对推力测量系统进行了标定并实现了计算机采集，推力测量系统最大相对误差为2％FS；温度测量目前还只限于对MPT谐振腔壁温的测量，使用E型镍铬—康铜热电偶即可较容易实现，其测量精度为5％FS；真空测量采用ZDF-5427M微机型复合真空计，其由热偶计和热阴极电离计复合而成，该真空计测量控制精度为3％FS。

Such as: calibrating the laser system, calibrating the measurement region and focusing the CCD camera for the diffuser passage with complex shape, selecting the best incidence angle for the laser sheet,, setting the time parameter including the time between pulses and the time between records, designing the laser system, and selecting water fog with 1～5μm diameter as seedings for PIV measurement after comparing several particles. All of the work is useful to accumulate the PIV measurement experience in turbomachinery. 2. Experimental research of the unsteady flow in diffusers The instantaneous velocity fields within the vaneless and vaned diffuser were measured by using PIV technique.

本文在国内首次进行PIV测量系统对离心风机扩压器内部非定常流动的测量，为此，作者作了必要的实验前期工作：双谐振激光器工作特性的标定；针对扩压器复杂的流道形状，解决了片光源照射区域位置的标定和CCD相机的聚焦等问题；为复杂流道形状的扩压器内部流动的PIV测量选择了最佳片光源入射角度；选择了合适的PIV测量时间参数；为实现非定常内流的PIV测量设计了PIV系统的光路布置；根据非接触测量示踪粒子的选取原则，对几种示踪粒子进行了筛选，最终1～5μm的水雾粒子在本文实验条件下获得最佳效果。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了