查询词典 measuring

Through the stress analysis of the automobile axle weighing instrument , this article discusses the influence of the height of the bearing plate on the measuring precision of the axle weighing, puts forward the structural design of the bearing plate and the arrangement plans of the sensors, and also analyzes the measuring errors of the automobile axle weighing instrument .

通过对汽车轴载质量测定时的受力分析，探讨了承载板高度对轴载质量测量精度的影响，提出了承载板的结构设计及传感器的布置方案，对汽车轴载质量测定仪的测量误差进行了分析。

The features of involute gear profile are mapping analyzed, the principle and method of on machine measuring the longitudinal form error of bull gear s with the rack probe is introduced, the data evaluation model of longitudinal form error is established, and a measuring example is given.

对渐开线齿轮廓面特性进行了映射分析，介绍了齿条刃边测头在机测量大型齿轮齿向误差的基本原理及测量方案，建立了齿向误差的数据评定模型，并给出了测量实

A clock at the level of micro second has beendeveloped by using the microcomputer's clock pulse signal. With this high precision clock, the error of measuring twisting moment can be less than 1％ and the error of measuring rotation velocity less than 1‰.

利用微机的时钟脉冲研制出一种精度达微秒级的时钟，用此时钟测量扭矩的误差小于1％，测量的转速误差小于1‰。

The gas solid interaction was studied, the solid concentration and particle size distribution contours downstream of the nozzle were obtained. The particle roping mechanism in a coal conveying pipe with large diameter was also studied with the fiber probe. The on-line coal concentration measuring facility is needed for NO〓 reduction. In this work, a set of on-line coal concentration measuring facility was developed and installed in the coal conveying pipes of a 660MW capacity utility boiler, which can give on-line accurate coal concentration information for the operator.

论文首次采用基于光学波动法的激光光纤探针，对高浓度的低NO〓燃烧器出口的气固两相流动的详细结构进行了试验，研究了配300 MW煤粉燃烧锅炉的燃烧器出口高浓度气固相射流中颗粒浓度、粒度随射流发展的演变规律，分析了利用水平浓淡燃烧器和齿形燃烧器实现对低NO〓燃烧有利的气固结构，并验证了基于DES方法的气固两相数值模拟的计算结果。

The error correction method for microwave measuring line is analyzed, and a new method is proposed which can realize the measurement of error network parameters for microwave measuring line. Then the least square method explicit solutions of error network are given, and the CAT of error network parameters is realized.

分析了微波测量线误差校正的方法，提出了仅用小反射滑动负载即可确定测量线误差网络参数的新方法，给出了测量线误差网络参数的最小二乘法显式解，并实现了测量线误差网络参数的CAT 。

According to the problem that grating scale hardly achieves high resolution when in high speed and the characteristic of high speed high precision system,this paper presents across dimension displacement measuring method based on dual grating scales dual measuring,the counting values of dual grating scales switch and merge.

在分析光栅线性位移测量原理、光栅尺的测量误差尤其是细分误差的基础上，本文重点研究双光栅尺切换与合成的原理，建立了基于双光栅尺高速高精度位移测量的设计准则，根据设计准则设计了切换基准拾取方法以及快速切换与合成方法，分析了双光栅计数值切换合成的误差。

In order to study the intake air flow characteristics in four-valve diesel engines, in this dissertation hot-wire anemometer and PIV twodimension instantaneous measuring technique are used. Extensive experimental study on two intake valve exit flow fields and longitudinal section flow field in cylinder are performed for different type of diesel engines. Great researching progress have been made on the interaction between two intake ports, and the formation process of in-cylinder swirl and flow field structure of cross and longitudinal section for four valve diesel engines. These results are presented in China for the first time and without such kind of research work reported abroad as detailed and deepgoing as this dissertation. The author designs and makes a set of hot wire measuring velocity device to measure the velocity distribution around the intake valve annulus and the cross section flow field in cylinder.

为了研究四气门柴油机进气过程中气体流动的变化规律，本文利用热线测速和PIV二维瞬态测速技术，对四气门柴油机两进气门出口全圆周流速场和缸内横、纵剖面的气体流动流场进行了大量的试验研究，在四气门柴油机两进气道之间相互影响的变化规律，缸内涡流的形成过程及缸内横、纵剖面流场结构等方面取得了重大的研究进展，这一研究工作在国内尚属首次，在国外也未见有如此全面、深入的研究报道。

Experiment results indicate that the laser speckle method is effective, its measuring value is about 14% less than the measuring value of dial gauge.

结果表明，激光散斑法用于测定闭合断续节理岩体的位移场效果良好，其测值比对应点千分表测值偏小14％左右。

The uncertainty evaluation of measuring results about indicator error of digital dial gauge 0~25 mm was analyzed in this article,those indicated that it was feasible using TWIN-CHECK1200 length measuring machine as calibration tools.

介绍了0~25 mm 数显千分表的示值误差测量结果的不确定度分析，表明了用TWIN-CHECK1200测长机进行校准的可行性。

Distribution of the Company's products are known to domestic and foreign manufacturers of products, such as Chengdu Blades Measuring Tool Works, shanghai measuring and cutting tools works, days vary, Henan abrasive abrasive plant, pigeons Shabu, Hohhot global licensing Chuck, Zhuzhou Carbide plant licensing diamond cutter head, and other alloys.

本公司经销的产品都以享誉国内外的厂家生产的产品为主，如成都量具刃具厂，上海量具刃具厂，天异，河南磨料磨具厂，白鸽砂布，呼和浩特的环球牌卡盘，株州硬质合金厂的钻石牌合金刀头等。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。