1.
diameter of root circular-arc center circle
![点击朗读](/dictall/images/read.gif)
齿根圆弧中心圆直径
2.
diameter of tip circular-arc center circle
![点击朗读](/dictall/images/read.gif)
齿尖圆弧中心圆直径
3.
B.C.D. of anchor (foundation) bolts
![点击朗读](/dictall/images/read.gif)
地脚螺栓中心圆直径
4.
The cylinder diameter of raceway center(mm)
![点击朗读](/dictall/images/read.gif)
-滚道中心圆直径(mm)
5.
Centrifugal fan. Center circle can be shown or hidden.
![点击朗读](/dictall/images/read.gif)
离心风扇。可显示或隐藏中心圆。
6.
Click on the center dot to rotate the hand around the action line.
![点击朗读](/dictall/images/read.gif)
点击中心圆点,沿着作用线旋转手臂。
7.
Yuen Yuen Institute Social Centre for the Elderly [Yuen Yuen Institute]
![点击朗读](/dictall/images/read.gif)
圆玄老人中心〔圆玄学院〕
8.
The distance between the center of an eccentric and its axis.
![点击朗读](/dictall/images/read.gif)
偏心距偏心圆的中心与圆轴间的距离
9.
The third layer in a concentric circle drawing. Fits between Concentric Center and Concentric Layer 2.
同心圆绘图的第三层。与同心圆中心层的外圆和同心圆第2层的内圆相吻合。
10.
a round shape formed by a series of concentric circles.
![点击朗读](/dictall/images/read.gif)
一系列的同中心的圆所形成的圆形状。
11.
a round arch drawn from a single center.
![点击朗读](/dictall/images/read.gif)
只有一个中心点的圆拱。
12.
The center (or fourth) layer of a concentric circle drawing. Fits inside of Concentric Layer 3.
同心圆绘图的中心(或第四)层。与同心圆第3层的内圆吻合。
13.
one-half the major axis of an ellipse; the distance from the center of an ellipse to one end.
椭圆长轴的一半;从椭圆的中心到一端的距离。
14.
Inverson of Circle: Into a circle, if the circle pass through inversion center O, it becomes a straight line.
圆的反演:反演成一圆。但当圆通过反演中心时变成一直线。
15.
a tool for cutting circular holes around a center.
![点击朗读](/dictall/images/read.gif)
在中心周围切圆形的孔的一种工具。
16.
The small central circle on a target.
![点击朗读](/dictall/images/read.gif)
靶心靶子上中间最小的圆环
17.
the acceleration toward the center that holds a satellite in elliptical orbit.
![点击朗读](/dictall/images/read.gif)
在卫星椭圆轨道上面向中心的加速度。
18.
The boss or knob at the center of a shield.
![点击朗读](/dictall/images/read.gif)
盾牌中心的突起物或圆形把手