名詞 axis:

1. a straight line through a body or figure that satisfies certain conditions
2. the center around which something rotates
   同義詞：axis of rotation
3. the main stem or central part about which plant organs or plant parts such as branches are arranged
4. in World War II the alliance of Germany and Italy in 1936 which later included Japan and other nations
5. a group of countries in special alliance
   同義詞：bloc
6. the 2nd cervical vertebra; serves as a pivot for turning the head
   同義詞：axis vertebra

1. The earth turns (ie rotates) on its axis once every 24 hours.
   地球每24小時自轉(zhuǎn)一圈。
2. A wheel revolves round/on its axis.
   輪子是繞軸旋轉(zhuǎn)的。
3. In computer graphics, turning all or part of a display image180 degrees about an axis in the plane of the display surface.
   在計算機制圖技術中，顯示圖象的全部或一部分對顯示面所在平面中某個軸線翻轉(zhuǎn)180度的處理方法。
4. Does the earth rotate on an axis?
   地球是繞軸旋轉(zhuǎn)的嗎？

ax.is

n.（名詞）
【復數(shù)】 ax.es[2k.sôz.] 縮寫 ax.
A straight line about which a body or geometric object rotates or may be conceived to rotate.
軸線：身體或幾何物體轉(zhuǎn)動或被設想成轉(zhuǎn)動所圍繞的一條直線
Mathematics
【數(shù)學】
An unlimited line, half-line, or line segment serving to orient a space or a geometric object, especially a line about which the object is symmetric.
軸：用于給空間或幾何體定位的無限直線、射線或線段，特別是關于對稱物體的線
A reference line from which distances or angles are measured in a coordinate system.
座標軸：坐標系中測量距離和角的參考線
A center line to which parts of a structure or body may be referred.
中軸：結構物或人體的某些部分可被參照的中心線
An imaginary line to which elements of a work of art, such as a picture, are referred for measurement or symmetry.
中軸線：相對于某些要求測量或?qū)ΨQ的文藝作品的一條假想線，如繪畫
Anatomy
【解剖學】
The second cervical vertebra on which the head turns.
支撐頭轉(zhuǎn)動的第二條頸椎
Any of various central structures, such as the spinal column, or standard abstract lines used as a positional referent.
中心結構物：任何一種中心結構物，如脊柱，或用于有位置物體的標準抽象線
Botany The main stem or central part about which organs or plant parts such as branches are arranged.
【植物學】 莖軸：象枝條這樣的器官或植物的基本構成體被排列于其上的主莖或中心部分
One of three mutually perpendicular lines that define the orientation of an aircraft, with one being along its direction of travel and the other two being perpendicular to the direction of travel.
導向軸：決定飛機方位的三條相互垂直線中的一條，一條沿著飛行的方向，其它兩條垂直于飛行的方向
A line through the optical center of a lens that is perpendicular to both its surfaces.
光軸：通過透鏡的中心垂直于物體兩面的線
One of three or four imaginary lines used to define the faces of a crystal and the position of its atoms.
晶軸：用于決定水晶表面和它的原子位置的三、四條假想線中的一條

An alliance of powers, such as nations, to promote mutual interests and policies.
軸心：促進共同利益以及方針政策的權力聯(lián)盟，如國家
Axis The alliance of Germany and Italy in 93', later including Japan and other nations, that opposed the Allies in World War II.
Axis 軸心國：93'年的德意聯(lián)盟，后來包括在二次大戰(zhàn)中反對同盟國的日本和其它國家

來源：
Middle English
中古英語
from Latin
源自 拉丁語