diameter [dai'æmitə]

diameter的基本解释

n.

直径

• Measure the diameter of this circle.
• 量一下这圆的直径。

• The pond has a diameter of three hundred metres.
• 这池塘直径有三百米。

• This glass magnifies 20 diameters.
• 这个放大镜能放大二十倍。

diameter的反义词

n. radius

diameter所属的单词分类

Math & Number / 数学与数字 [192]

y-coordinate  ·  long division  ·  kilo-  ·  x-coordinate  ·  scientific notation  ·  greater than  ·  Venn diagram  ·  q.e.d.  ·  greater  ·  y-axis

与diameter相关的网络例句 [注：此内容来源于网络，仅供参考]

According to the observation of the microstructure of small diameter lumber with scan electron microscope, there are many bordered pits of the radial trancheidal wall in the small-diameter Larch, and most of them have pit film. The resin is not only in resin canal, but also in some trancheid and ray parenchyma cells. The drying defects of small-diameter Larch lumbers were the most severe in consecution heating, fluctuating-heats 2h in between, and drying defects were nearly not observed in fluctuating-heats 6h. There is tylosis in the vessel of the heartwood of small-diameter Cathay poplar. The bordered pits of the radial trancheidal wall are dense, and the pits between vessels are alternate, most of them have pit film. Different collapse happened in all the small-diameter Cathay poplar lumbers. The collapse of small-diameter Larch lumbers was the most severe with consecution heating, fluctuating-heats 2h in between, the least with fluctuating-heating 6h.

通过扫描电镜观察发现，小径木落叶松的径壁具缘纹孔数目较多，且多具纹孔膜，小径木落叶松除在树脂道中含有树脂外，在一部分管胞胞腔内以及一些木射线细胞中也含有树脂，在产生缺陷的小径木落叶松锯材中，连续加热方式下锯材的开裂缺陷最为严重，波动2时次之，波动6时几乎没有开裂现象；小径木大青杨心材导管中的层状浸填体含量较多，且径壁具缘纹孔较为密集，管间纹孔呈互列方式，绝大多数纹孔具有纹孔膜，干燥后的小径木大青杨锯材均有不同程度的皱缩现象产生，其中连续加热干燥试验锯材的皱缩现象最严重，波动2时次之，波动6时干燥试验锯材的皱缩缺陷最小。

The density is Granger of height and breast diameter, and the heightis Granger causality of the diameter too, but the diameter isn't the causality of the height when logging number equates 2. In the intercomparison of effects of the diameter, height and density each other, the effect of the height and density is far-reaching. The height and density should be paid more attention for maintaining its' effect on the diameter in forest management.

当滞后阶数为2时，密度是胸径、树高的Granger原因，树高是胸径的Granger原因，胸径不再是树高的Granger原因，说明胸径、树高、密度3个林分因子中，密度、树高的影响更深远，所以在森林培养时，一方面要更加注意林分密度，优化林木的营养空间，促进林木因子的全面生长，另一方面，也不能忽视对树高的培养，以维持树高对胸径的影响。

The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.

本论文的主要工作包括以下几个方面：（1）在对粒子场测量的相关理论和具体方法进行综述分析的基础上，提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路；（2）研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统，并使其实现了对粒子场粒径分布的测量功能；（3）研制了基于粒子运动轨迹的速度场重建算法，获取了细水雾雾场的速度分布；（4）研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统"，该系统既可分析给出粒子场的粒径分布直方图和平均粒径，还可给出粒子的数目以及最大、最小粒径等信息；（5）建立了一细水雾发生系统，并应用上述方法对不同压力条件下细水雾系统的雾场特性（如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等）进行了实验测量研究；（6）对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析，并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证，同时对其局限性进行了分析讨论；（7）对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。

与diameter相关的网络解释 [注：此内容来源于网络，仅供参考]

diameter：直径

7.为元件指定所有参数:"单位"(UNITS)、"供货商"(VENDOR)、"类型"(TYPE)、"直径"(DIAMETER)、"长度"(LENGTH) 和"头"(HEAD). 将出现一个绘图,显示带有全部必需参数的所选元件. 绘图下有一个表列举出全部参数值. 定义所有参数后,

diameter：孔径

均需要透过黄光显影与蚀刻步骤形成Via,目前则以深反应离子蚀刻(Deep Reactive Ion Etching;DRIE)技术为主,Via孔径(Diameter)多在20μm以下,受限目前技术孔径 ...3-3 后制程步骤与结果 依据MEMS元件在CMOS标准制程中制作的先后顺 序分类,

diameter：径

如果选取"直径"(Diameter) 主参照,并选取轴作为次参照,则会显示此选项. 已选取"线性"(Linear) 作为放置类型. "形状"(Shape) 上滑面板允许定义当前孔几何,并提供孔几何的说明以对您进行指导.

diameter：直径=>直径

供货商 要恰当地设置长度,请选择"名称 名称"(Name),"直径 直径"(Diameter) 和"长度 长度"(Length),"长度"处显示的是两个所选参照面之间的距离.如果需要, 名称 直径 长度 可键入一个非标准长度,使支柱缩短为该长度.

diameter：abbr. dia; 直径其它品质术语类