semicircle

noun

1. 半圆
   one half of a circle
2. 半圆弧线
   the line that forms the edge of a semicircle
3. 半圆形
   a thing, or a group of people or things, shaped like a semicircle
   1. a semicircle of chairs
      摆成半圆形的椅子
   2. We sat in a semicircle round the fire.
      我们坐在炉火前，围成一个半圆形。

1. N-COUNT 半圆;半圆弧;半圆形
   A semi-circle is one half of a circle, or something having the shape of half a circle.
   1. They stood in a semi-circle round the teacher's chair and answered questions.
      他们围着老师的椅子站成半圆形回答问题。

1. He indicated a semicircle with a radius of about thirty miles.
   他标示出了一个半径大约为30英里的半圆形。
2. It's called the Ring of Fire, a semicircle of violently shifting plates and volcanoes that runs along the edges of the Pacific Ocean, from New Zealand to Chile.
   这里被称为火圈带，从新西兰到智利，半圆形的急速移动板块和火山群绵延于太平洋上，使之地球上最容易地震的区域。
3. He was standing in a dimly lit room, and a semicircle of wizards faced him, and on the floor at his feet knelt a small, quaking figure.
   他正站在一个灯光昏暗的房间里，巫师们面向他围成半圆，他脚边的地板上跪着一个颤抖的矮小身影。
4. On the right, the vast semicircle of the Town, much more intermixed with gardens and monuments.
   右边是广大半圆形的新城，花园和历史古迹更多。
5. A semicircle of chairs
   排列成半圆形的椅子
6. The typical feature of CT was a crescent or semicircle area with slightly low density ( fibroid membrane).
   典型CT表现为新月形或半圆形低密度（纤维包膜）。
7. Please put the chairs in a semicircle.
   把椅子排成半圆形。
8. Objective: To ask of rigid semicircle choledochoscopy on the application of laparoscopy extraction for bile duct stone.
   目的探讨硬质半曲胆道镜在腹腔镜胆道结石手术中的应用价值。
9. The steam was shut off, and the Abraham Lincoln, beating to port, described a semicircle.
   汽门立刻被关掉了，林肯号从左舷转了一百八十度。
10. Almond-flavored yeast-raised pastry shaped in an irregular semicircle resembling a bear's claw.
    杏仁味的、酵母发酵的糕饼，不规则的半圆形，很像熊的爪子。
11. Numerical simulation of 3-D inclined semicircle surface crack propagation
    三维斜置半圆形表面裂纹扩展数值模拟
12. Exquisite fashion. Semicircle shape, but it can be introducing. Design of holes can be placed in an orderly manner mouthwash various appliances.
    精美时尚.半圆造型，可以贴墙而放.设计中的小洞可以有条不紊地放置各种漱口用具。
13. Observation eyepiece consists of concave mirror and a separate gate is formed, in the eyepiece can be seen at the same time the two semicircle color, its left for the sample color.
    观察目镜由凹镜和分隔栅组成，在目镜中可同时看到二个半圆色，其左边的为试样颜色。
14. With the blocking idea, the watermark is embedded into the Fourier semicircle region.
    该算法基于分块思想将水印嵌入到傅立叶频域的半圆形区域。
15. An inner hollow cavity of the semicircle arc plate of the utility model is comprising of a steam tube, with advantages of saving material and installment column, and low cost.
    本实用新型的半圆弧形板的内空腔构成蒸气管路，节省材料和安装体积，成本较低。
16. The children sit in a semicircle, listening closely ( attentively) to my stories.
    孩子们围坐成半圆形，专心地听我讲故事。
17. Root-bound men with nothing better to do filled the semicircle of chairs in the customers 'room, listlessly watching numbers crawl by on the Trans-Lux, an electronic display of prices of major stocks.
    客户室半圆形的一圈椅子上，坐满了没什么更好的事情可做的人，无精打采地看着Trans-Lux上一串串数字缓缓滑动，这是一种电子显示器，播报主要股票的价格。
18. The upper connection button and the lower connection button are uniformly in semicircle shape, positioned on one face or two faces of the wine box.
    上连接钮和下连接钮均为半圆形，并位于酒盒的一面或者两面。
19. A big pit had been dug out near the post, and the freshly turned-up earth was heaped up by it. A great crowd of people formed a semicircle about the pit and the post.
    柱子后面是掘好的一个大坑，边沿有新垒起的泥土，土坑和柱子附近，呈半圆形站着一大群人。
20. They are sitting in a semicircle.
    他们围成半圆形坐着。
21. Study of Gradient at Junction of Straight Lane with Semicircle of Typical Track and Field Stadium
    标准田径场直道和半圆交接处的坡度研究
22. Flow Velocity Distribution Around Semicircle Cylinder Pier In Rectangular Channel
    矩形断面明渠中半圆形边墩周围流速分布特性研究
23. The tube comprising the semicircle arc plate is fixed at the bottom side and the side wall of the heating tube.
    半圆弧形板构成的管道固定在底边和侧壁上。
24. Experimental Study On Tubulence Intensity Of Flow Around Semicircle Cylinder Pier In Rectangular Channel a device that gauges the level by showing the surface of the water in a trough or U-shaped tube.
    矩形水槽中半圆柱形边墩周围水流紊动强度的研究在槽或U形管内显示水位的测量仪器。
25. The materials of semicircle seamless steel tube can fall into carbon steel ( 20#) and stainless steel ( 321).
    半圆无缝管材质有碳钢（20钢）和不锈钢（321钢）。
26. A lectern and platform were set up on the east side, facing an array of seats arranged in a semicircle.
    厅的东侧设置了主席台和讲台，面对讲台排列着呈半圆形的一排排座位。
27. We sat in a semicircle about the fire.
    我们坐在火旁，围成个半圆形。
28. To see a row of polymer dots inside the innermost semicircle, the sample is illuminated with light.
    可以看到一列聚合物圆心内部底部半圆，样品用光照亮。
29. The village was formed of semicircle huts.
    这个村庄是由半圆形的茅舍构成的。
30. I asked my student to sit in a semicircle to listen to the story.
    我让我的学生们围成半圆坐着听故事。

noun

1. a plane figure with the shape of half a circle

   Synonym:    hemicycle