API圆螺纹的锥度和中径是两个重要的参数。
The taper and pitch diameter of API round thread casing are two of the most important parameters.
检测圆锥管螺纹基面中径的方法有很多，但测量过程复杂。
There are many ways to measure base-level pitch diameter of cone-shaped thread.
分析比较了紧密距测量以及中径和椭圆度量规测量的误差。
The errors of the stand-off measurement and measurement errors made by pitch diameter gauge and ovality gauge are analyzed and compared.
提供了一种简便易行、准确可靠的测量内螺纹单一中径的手段。
A simple, easy to use, correct and reliable for measurement of single pitch diameter of inner thread is provided.
介绍自行开发的内螺纹中径测量装置的构成、原理和使用方法。
This paper introduces the structure, the principle and the operation of a device measuring inside screw developed by the authors.
本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
通过对普通螺纹中径诸参数的几何分析，揭示出其单一中径与实际中径的内在联系与区别。
This article brings to Light the internal relations and difference between single pitch diameter and actual pitch diameter by means of geometrical analysis of several parameters of pitch diameter.
前言：钢质曲轴螺孔攻丝加工中经常出现螺纹烂牙、中径扩大等问题，且刀具寿命较短。
During tapping in steel crankshafts, the most commonly encountered problems are "mess tooth" and oversize thread, additionally the tap life is very low.
中径电阻焊管生产线，用来生产圆管、方管和矩形管，起始原料是根据BTM 520标准的76- 165 mm的热轧和冷轧钢卷。
ERW pipe and profile machine complete line to manufacture, round square and rectangular pipes. install and start the BTM520 (76-165mm) hot and cold rolled steel coils.
本文考虑了非对称三角形螺纹的螺距偏差和牙侧角偏差的各种组合对作用中径的共同影响，运用了包容图位移法，分析和推导出非对称螺纹作用中径的精确计算公式。
By the use of the displacing enveloping drawing method, a set of exact formulae for calculating the virtual pitch diameter is deduced and verified by measured data.
UWB主要应用于密集多径室内信道中，多径干扰是系统的主要干扰来源之一。
Since UWB system generally operates in dense multipath indoor channel, multipath interference becomes one of the main interferences affecting system performance.
无线环境中存在多径衰落、多谱勒频移和信道快速时变等许多不利因素。
There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.
在此信道模型中，多径数目少则几十多则几百，信道估计的好坏直接影响系统的性能。
The number of paths varies from dozens to hundreds, whose estimation accuracy influences system performance.
对GPS伪码测量的多径误差进行了分析，给出性能仿真结果，为克服GPS测量中的多径误差提供了理论依据。
The multi-path error for GPS code measurement is analyzed, and the simulations are obtained, which can provide theory evidence in the work to overcome the multipath error in GPS measurement.
本文重点介绍了透气系统的功能、型式和组成，并详细阐述了系统中管路管径的计算顺序和方法；
The author describes the function, type and components of this system, as well as the calculations of pipe diameter of the system.
文中根据该导线《技术条件》提出的特殊要求，论述制造厂应如何解决扩径导线制造中面临的新问题。
This paper presents ways to solve the new problems arising during the production of expanded conductors based on the special requirements specified in the technical specification of the conductor.
为了减小水声通信系统中存在的由于多径传播效应引起的符号间干扰，可在系统中使用线性均衡器。
To induce inter symbol interference which is due to multipath transmit effect in the water acoustic communication system, linear equalization can be adopted in the system.
而参与到交流中的唯一路径就是分享。
And the only way you participate in the conversation is by sharing.
检查根环境并确保LIBPATH或PATH环境变量中不存在DB 2路径或实例的SQLLIB。
Check your root environment and make sure there is no DB2 path or instance's SQLLIB on the LIBPATH or path environment variables.
四月芬芳的晴天里，他从林径中走来，走来，一直不停地走来。
In the fragrant days of sunny April through the forest path he comes, comes, ever comes.
新型切削齿及高密度保径布齿提高钻头在硬研磨性地层中的使用寿命。
New type PDC cutters and heavyset gage design promote longer bit life in hard and abrasive formations.
因此，国内从南京长江二桥开始，在大跨径钢箱梁桥面铺装工程中引进并开展环氧沥青混凝土技术的研究与推广应用工作。
Therefore, the research on epoxy asphalt concrete for long-span steel deck pavement was introduced into china by the steel deck pavement of 2nd Nanjing Yangtse River Bridge.
公司在大跨径拱桥施工中开发出钢绞线斜拉扣挂桥梁安装系统，解决了大跨径拱桥无支架安装的技术难题。
GRBC had developed steel strand inclined-haul bridge installing system, which resolved the technical problem for large-span arch bridge installation without scaffold.
该时期张承志作品中的死亡叙事不是单纯的控诉忧患的载体，而是在开辟表现生存意识、体现生存价值的新径。
The death narrative in Zhang Cheng-zhi s works in this period is not a simple carrier to complain misery, but is the method of developing a new way of manifesting survival sense and survival value.
我们还分析了在多用户多径分集方案中如何支持可变质量可变速率的多媒体业务。
We also analyze how to provide multimedia services with the variable quality and variable information rate in the proposed system.
脉冲超宽带(IR - UWB)信号在密集多径环境中存在严重的时间弥散，会产生波形失真。
In dense multipath environments, IR-UWB (impulse Radio-Ultra Wideband) signals suffer from severe time dispersion which distorts the impulse wave.
众所周知，水下声信道是相干多途信道，信号在信道中的多径传播使得接收信号序列复杂化，因而极大地增加了信号处理的难度。
It's well known that underwater acoustic channel is a coherent multi-path channel, which brings difficulties in signal processing because of the complexity of the received signal sequence.
本文在瑞利衰落模型下，研究了高频电离层信道中多径时延与多普勒频移的随机特性。
In this paper, with Rayleigh fading the random characteristics of multipath time delay and Doppler shift in HF ionospheric channels is discussed.
本文介绍光纤直径动态测量中采用的激光扫描技术以及纤径控制中采用的逐点比较式新技术。
This paper describes a laser scanning technique used for dynamic measurement of optical fiber diameter and a new point by point comparison-technique used for controlling optical fiber diameter.
本文介绍光纤直径动态测量中采用的激光扫描技术以及纤径控制中采用的逐点比较式新技术。
This paper describes a laser scanning technique used for dynamic measurement of optical fiber diameter and a new point by point comparison-technique used for controlling optical fiber diameter.
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