| 单词 | 直径 |
| 释义 | 〔thin〕Not great in diameter or cross section; fine:细的：直径或横断面小的；纤细的：〔actinomorphic〕Of or relating to a flower that can be divided into equal halves along any diameter, such as the flowers of the rose or tulip.放射状的：属于或关于沿任何一条直径可以均分为二的花的，如玫瑰或郁金香的花〔barrel〕A large, cylindrical container, usually made of staves bound together with hoops, with a flat top and bottom of equal diameter.桶：圆柱形大容器，常由桶板及周围的铁箍组成，平顶平底且直径等同〔tornado〕A rotating column of air usually accompanied by a funnel-shaped downward extension of a cumulonimbus cloud and having a vortex several hundred yards in diameter whirling destructively at speeds of up to 500 miles (800 kilometers) per hour.龙卷风，陆龙卷：一种纵向的气旋，伴随有倒漏斗形的积雨云，涡流直径达几百码，以每小时五百英里（八百公里）的速度移动，其旋转具有极大的毁坏性〔caliber〕The diameter of the inside of a round cylinder, such as a tube.口径：圆柱体内侧圆的直径，如管道〔wire〕A usually pliable metallic strand or rod made in many lengths and diameters, sometimes clad and often electrically insulated, used chiefly for structural support or to conduct electricity.金属丝，金属线：有各种长度和直径的通常易弯的金属制的线或条，有时有包层、通常绝缘，主要用于结构上的支撑或输送电流〔micronize〕To reduce to particles that are only a few microns in diameter.使成为微小粒子，使微粉化：使成为直径仅为数微米的小粒子〔comet〕A celestial body, observed only in that part of its orbit that is relatively close to the sun, having a head consisting of a solid nucleus surrounded by a nebulous coma up to 2.4 million kilometers (1.5 million miles) in diameter and an elongated, curved vapor tail arising from the coma when sufficiently close to the sun. Comets are thought to consist chiefly of ammonia, methane, carbon dioxide, and water.彗星：一种天体，仅能在它比较接近于太阳的那一部分轨道才能看到，有一个包括固体核、由直径达到两千四百万公里（一千五百万英里）的星云状的彗发围绕的头部 ，当足够接近太阳时一个拉长的曲线气尾从彗发升起。人们认为彗星主要有氨、甲烷、二氧化碳和水构成〔rafflesia〕Any of various parasitic plants of the genusRafflesia of tropical Asia, having small, brownish, scalelike leaves and fleshy, apetalous, foul-smelling flowers of various sizes. The species R. arnoldii has the largest flowers among all flowering plants, often measuring up to 1 meter (40 inches) in diameter. 大花草：一种生于亚洲热带的大花草 属寄生植物，叶小、呈棕色、鳞状，有大小各异、肉质、单（花）被的、味道很难闻的花 大王花 的花在所有开花品种中是最大的，直径通常可达1米(40英寸） 〔bushing〕An adapter threaded to permit joining of pipes with different diameters.导线套管：允许不同直径的导线形成的导线束通过的衬套〔gauge〕Thickness or diameter, as of sheet metal or wire.直径，厚度：金属板的厚度或线的直径〔microbubble〕An extremely small bubble, usually only a few hundred micrometers in diameter, that can be uniformly suspended in a liquid such as blood.微细泡沫：非常细小的泡沫，通常直径只有数百微米，可以平均地分布在例如血液的液体上〔galaxy〕Any of numerous large-scale aggregates of stars, gas, and dust that constitute the universe, containing an average of 100 billion (1011) solar masses and ranging in diameter from 1,500 to 300,000 light-years. Also called nebula 星系，星群：组成天体的大量大规模的星、气或尘埃的聚集物，包括平均100(1011)亿的太阳质量，直径从1,500到300,000光年 也作 nebula〔racquetball〕A game played on a four-walled handball court by two or four players with short-handled rackets and a hollow rubber ball 2¼ inches (5.7 centimeters) in diameter.网拍墙球：在四面有墙的手球场内由两名或四名选手玩的一种游戏，使用一种短柄球拍和一个直径2¼英寸(5.7厘米）的空心橡皮球〔windage〕The difference in a given firearm between the diameter of the projectile fired and the diameter of the bore of the firearm.游隙：某一特定火器枪弹的直径与火器镗孔的直径之间的差异〔microcyte〕An abnormally small red blood cell that is less than five microns in diameter and may occur in certain forms of anemia.小红血球：一种畸形小的红血球，直径小于5微米，在某些贫血症状中出现〔semicircle〕A half of a circle as divided by a diameter.半圆：直径分割的圆的一半〔isodiametric〕Having equal diameters or axes.等径的：有相等的直径或轴的〔caliber〕The diameter of a large projectile, such as an artillery shell, measured in millimeters or in inches.弹径：大炮弹的直径，如炮弹壳，以毫米或英寸计〔oblate〕Having an equatorial diameter greater than the distance between poles; compressed along or flattened at the poles:扁圆的：赤道直径大于两极距离的；在极点压缩或扁平的：〔diameter〕A straight line segment passing through the center of a figure, especially of a circle or sphere, and terminating at the periphery.直径：穿过一图形，特别是圆形或球形的中心到圆周结束的直线段〔mil〕A unit of length equal to one thousandth (10-3) of an inch (0.0254 millimeter), used, for example, to specify the diameter of wire or the thickness of materials sold in sheets. 密耳：长度单位，等于一英寸的千分之一(10-3)(0.0254毫米），如用来标明电线的直径或按页出售的材料的厚度 〔caliber〕The diameter of the bore of a firearm, usually shown in hundredths or thousandths of an inch and expressed in writing or print in terms of a decimal fraction:口径：火器枪孔的直径，常以英寸的百分数或千分数表示，在手写或印刷中常以十进制分数表示：〔Saturn〕The sixth planet from the sun and the second largest in the solar system, having a sidereal period of revolution about the sun of 29.5 years at a mean distance of about 1,425,000,000 kilometers (886,000,000 miles), a mean diameter of approximately 119,000 kilometers (74,000 miles), and a mass 95 times that of Earth.土星：距太阳第六远的行星，是太阳系中第二大行星，绕日公转周期29.5年，公转平均半径约1,425,000,000公里(886,000,000英里），平均直径大约119,000公里(74,000英里），质量是地球的95倍〔diametrical〕Of, relating to, or along a diameter.直径的：直径的，与直径有关的，或沿直径的〔aperture〕The diameter of the objective of a telescope.孔径：望远镜物镜的直径〔polar〕polar distance; polar diameter.极距；两极的直径〔cable〕A strong, large-diameter, heavy steel or fiber rope.缆绳，绳索：高强度的、直径大的、高强钢质或纤维质的绳子〔quarter〕To quartersaw.将…沿两直径成90°锯开〔Pluto〕The ninth and usually farthest planet from the sun, having a sidereal period of revolution about the sun of 248.4 years, 4.5 billion kilometers or 2.8 billion miles distant at perihelion and 7.4 billion kilometers or 4.6 billion miles at aphelion, and a diameter less than half that of Earth.冥王星：距离太阳第九远而且通常也是最远的一颗行星，它绕太阳运转的恒星年为2484年，在近日点时距太阳45亿公里或28亿英里，在远日点时距太阳74亿公里或46亿英里，其直径不到地球直径的一半〔aperture〕The diameter of such an opening, often expressed as an f-number.孔径：这种开口的直径，常以f数表示〔racquets〕A game played on a large, netless, four-walled court by two or four players with long-handled rackets and a hard, fast-moving ball 1 inch (2.5 centimeters) in diameter.网拍墙球戏：由两名或四名选手在一个大的、无网的、四面有墙的场地玩的一种游戏，使用一长柄球拍和一个直径1英寸(2.5厘米）的快速飞动的硬球 |
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