The characteristic of piping design is standardization and in series,and the standardization of the series of nominal diameter,outside diameter and thickness of pipe is the basis of the standardization of pipe fittings.
其中管道公称直径、外径和壁厚系列的标准化是管道元件标准化的基础。
Interaction of measurement accuracy between outer diameter of tapered roller and its base face;
圆锥滚子测量时其外径与基面精度的相互影响
Automatic Measurement and Control Instrument for Glass Tube Outer Diameter and Wall thickness;
玻管外径及壁厚自动测控仪器的研制
By using this system, the non contacted on line automatic measurement on external diameters of hot rolled workpieces and the quality monitoring can be carried out under the mal condition.
该系统可在恶劣工况条件下实现对热轧件外径尺寸的非接触式在线自动测量及加工质量监控。
Method for measuring a wall thickness and external diameter of glass tube simultaneously is introduced in this article.
提出了一种用激光同时测量玻璃管外径和壁厚的方法 。
Methods: The internal and external diameters(ID & ED) of the dorsalis pedis artery on 60 feet of 31 cadavers were measured under a stereoscopic microscope with an eyepiece micrometer.
方法:用体视显微镜分组测量31具尸体60侧足背动脉近端、中点和远端的内、外径。
With given circumradius R and inradius r,two fundamental inequalities related to the lower bound of the area A and perimeter p of a convex set K are obtained.
在给定平面凸集K的外径R和内径r的条件下,得到了关于凸集的面积A和周长p的下界的一组不等式,并且证明了当凸集K为双帽体时不等式取得等号。