n. 半圆形
n. 半圆，半圆形
名词复数形式:semicircles
1、sit in a semicircle.
围成半圆坐
2、semicircle cylinder.
半圆排列汽缸
3、They could say a semicircle.
他们会说是一个半圆。
4、An angle in a semicircle is a right angle.
半圆所对的圆周角是直角。
5、We sat in a semicircle facing the teacher.
我们面对着老师坐成半圆形。
6、The children sit in a semicircle, listening closely to my stories.
孩子们围坐成半圆形，专心地听我讲故事。
7、Do bottom with the black card plank, with the toothpick put like a semicircle.
用黑色卡板做底，用牙签插好一个半圆。
8、The materials of semicircle seamless steel tube can fall into carbon steel and stainless steel.
半圆无缝管材质有碳钢和不锈钢。
9、The shape of herniated discs liked semicircle or ellipsoidal.
在冠状位上呈钻头状，游离型椎间盘呈条索状，或不规则形。
10、Treatment of lower limb shortening and bony defects with semicircle external fixator
半环槽式外固定架治疗下肢短缩畸形及骨缺损