quadrant

英式音标：[ˈkwɒdrənt]

美式音标：[ˈkwɑdrənt]

词语分类：TEM8

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概况：

n. 象限；[海洋][天] 象限仪；四分之一圆

词义：

n.

四分之一圆；扇形体；象限仪；四分仪

变形

复数：quadrants

英英释义

quadrant[ 'kwɔdrənt ]

n.

a quarter of the circumference of a circle

同义词：right angle

a quarter of the circumference of a circle

同义词：quarter-circle

any of the four areas into which a plane is divided by two orthogonal coordinate axes

the area enclosed by two perpendicular radii of a circle

a measuring instrument for measuring altitude of heavenly bodies

用法：

双语例句

用作名词(n.)

A symbol appears in an upper quadrant of the screen.
一个符号出现在屏幕上端的四分圆的地方。

The line AB lies in the second quadrant.
线段AB是处在第二象限中。

权威例句

Quadrant sparing of the macula

Safe control of four-quadrant switches

Quadrantectomy versus lumpectomy for small size breast cancer

The Four Quadrant Phase Mask Coronagraph and its avatars

Pasteur's Quadrant: Basic science and technological innovation

Four-quadrant assessment of amniotic fluid volume. Interobserver and intraobserver variation.

Arrangement for increasing the fill factor in a four-quadrant-type detector

Amniotic fluid volume assessment with the four-quadrant technique at 36-42 weeks' gestation

Comparing radical mastectomy with quadrantectomy, axillary dissection, and radiotherapy in patients with small cancers of the breast.

Conservative treatment of early breast cancer. Long-term results of 1232 cases treated with quadrantectomy, axillary dissection, and...

同义词：sector

同根词：quad

英语词源：

quadrant (n.)

late 14c., "a quarter of a day, six hours," from Middle French quadrant, from Latin quadrantem (nominative quadrans) "fourth part," also the name of a coin worth a quarter of an as, noun use of present participle of quadrare "to make square; put in order, arrange, complete; run parallel, be exact," figuratively "to fit, suit, be proper," related to quadrus "a square," quattuor "four" (see four). The surveying instrument is first so called c. 1400, because it forms a quarter circle. Related: Quadrantal.

造句：

1. azimuth quadrant

地平象限仪

-- 来源 -- 英汉 - 翻译参考[网络]

2. elastic quadrant

弹性舵扇

-- 来源 -- 英汉 - 翻译参考[网络]

3. quadrant instrument

象限仪

-- 来源 -- 英汉 - 翻译参考[网络]

4. optical quadrant

光学像限仪

-- 来源 -- 英汉 - 翻译参考[网络]

5. quadrant dividers

象限分线规

-- 来源 -- 英汉 - 翻译参考[网络]

6. rudder quadrant

方向舵扇形体

-- 来源 -- 英汉 - 翻译参考[网络]

7. quadrant multiplier

象限乘法器

-- 来源 -- 英汉 - 翻译参考[网络]

8. counter quadrant

对部

-- 来源 -- 英汉 - 翻译参考[网络]

9. quadrant orifice

扇形孔板

-- 来源 -- 英汉 - 翻译参考[网络]

10. dangerous quadrant

危险象限

-- 来源 -- 英汉 - 翻译参考[网络]