semicircle

n.

半圆形，半圆形的周长，半圆形的东西；

复数：semicircles

1. An angle in a semicircle is a right angle.
   半圆所对的圆周角是直角。
2. We sat in a semicircle round the fire.
   我们坐在炉火前，围成一个半圆形。
3. We sat in a semicircle facing the teacher.
   我们面对着老师坐成半圆形。

Semicircle
Semicircle
Semicircle Control Chart for Variables Data
Polynomials orthogonal on the semicircle ☆
Eyelid Reconstruction by the Semicircle Flap Technique
Introspection, empathy, and semicircle of mental health.
Alpha track detector with foldable semicircle ring
Accuracy of the Semicircle Approximation for the Density of Eigenvalues of Random Matrices
Triangles Inscribed in a Semicircle, in Minkowski Planes, and in Normed Spaces ☆
Similar semicircle detecting apparatus and computer-readable storage medium storing similar semicircle detecting program