1.
double radius button head snap
双半径半圆头铆钉窝子
2.
The half dome over an apse.
穹内半圆顶教堂后部的半圆形穹顶
3.
dangerous sector
危险半圆(北半球危险半圆在风暴轨迹的右边
4.
Woodruff keys--Types and dimensions
GB/T1099-1979半圆键型式尺寸
5.
a semicircle of chairs
排列成半圆形的椅子
6.
(used of the moon) more than half full.
（用来指月亮）大于半圆。
7.
Round head rivets
GB/T867-1986半圆头铆钉
8.
Round head rivets--Black
GB/T863.1-1986半圆头铆钉(粗制)
9.
Cup head nib bolts
GB/T13-1988半圆头带榫螺栓
10.
Cup head square neck bolts
GB/T12-1988半圆头方颈螺栓
11.
strong oval head square neck bolt
加强半圆头方颈螺栓
12.
a theater that offers semicircular seating.
提供半圆形坐椅的剧院
13.
plug-and-feather method
半圆铁棒夹楔劈石法
14.
Stand in a horseshoe facing me.
面向我排成半圆形站着.
15.
Semicircular.Used of bow windows.
半圆的。用于弓形窗
16.
They are sitting in a semicircle.
他们围成半圆形坐着。
17.
precision semi-automatic universal cylindrical grinder
精密半自动万能圆磨床
18.
reentrant cylindrical cavity
圆柱形凹腔, 半同轴空腔