英语释义

1. an instrument for measuring altitudes consisting commonly of a graduated arc of 90 degrees with an index or vernier and usually having a plumb line or spirit level for fixing the vertical or horizontal direction

2. a device or mechanical part shaped like or suggestive of the quadrant of a circle

3. an arc of 90 degrees that is one quarter of a circle

4. the area bounded by a quadrant and two radii

5. any of the four parts into which a plane is divided by rectangular coordinate axes lying in that plane

6. any of the four quarters into which something is divided by two real or imaginary lines that intersect each other at right angles

7. one part of something that is evenly divided into four parts especially, geometry one part of a circle that is evenly divided into four parts

8. one-fourth of a circle

9. any of the four parts into which something is divided by two imaginary or real lines that intersect each other at right angles

10. an arc of 90° that is one quarter of a circle

11. any of the four more or less equivalent segments into which an anatomic structure may be divided by vertical and horizontal partitioning through its midpoint
pain in the lower right quadrant of the abdomen

片语

quadrantal angle[数] 象限角

quadrantal corrector象限自差校正器

quadrantal heading象限航向

quadrantal symmetry[数]

quadrantal correctors象限自差校正器

quadrantal points中间基本方位

quadrantal davit弧齿式吊艇柱

quadrantal deviation象限误差

quadrantal distribution象限分布

英汉例句

• Diagnosis of sliding bearing based on quadrantal area information entropy of axle centre track

  基于轴心轨迹象限面积信息熵滑动轴承的诊断