| 单词 | 截面 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔PET scanner〕A device that produces cross-sectional x-rays of metabolic processes by means of positron emission tomography.正电子发射层析扫描仪：一种装置，通过正电子放射的X射线断层照相术产生的模截面X射线的代谢过程美国传统〔PET scan〕A cross-sectional image produced by a PET scanner.正电子发射层析扫描图：由正电子发射层析扫描仪所绘制的模截面图美国传统〔annual ring〕The layer of wood formed in a plant during a single year. Annual rings appear concentric when viewed in cross section.年轮：一年里树木长出的层。从截面上看年轮呈同心圆状美国传统〔bracket〕You'd better bracket those shelves with two-by-fours.你最好用截面为2英寸×4英寸的木材为那些架子做托架。21世纪英汉〔cavetto〕A concave molding with a cross section that approximates a quarter circle.飞檐的凹圆线脚：截面近于九十度弧的凹线脚美国传统〔cross section〕A piece so cut or a graphic representation of such a piece.截面图：按此法切割而成的一个断片或表示这一断片的图画美国传统〔cross-section〕The hall is square in cross-section.大厅的横截面是正方形的。柯林斯高阶〔cross-section〕The hall is square in cross-section.这个大厅的横截面是正方形的。外研社新世纪〔cross-section〕The roof beams were 50 centimetres square in cross-section.顶梁的横截面有 50 平方厘米。朗文当代〔current density〕Symbol j, J Electricity The ratio of the magnitude of current flowing in a conductor to the cross-sectional area perpendicular to the current flow.符号 j, J 【电学】 电流密度：在某一导体中流动的电流量与电流方向垂直的截面面积之间的比率美国传统〔gouge〕A chisel with a rounded, troughlike blade.半圆凿：带有凹凸横截面的圆形的凿子美国传统〔growth ring〕A growth layer in secondary xylem seen in a cross section.生长轮，年轮：树木横截面的次生长木质部的生长层次美国传统〔horizon〕A specific layer of soil or subsoil in a vertical cross section of land.地层，岩层：处于土地的垂直横截面中的某一具体土层或次土层美国传统〔hyperbolic paraboloid〕A surface of which all sections parallel to one coordinate plane are hyperbolas and all sections parallel to another coordinate plane are parabolas.双曲线抛物线面：一个平面，平面上所有平行于一个坐标平面的所有截面都是双曲线；而平行于另一坐标平面的所有截面都是抛物线美国传统〔paraboloid〕A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.抛物面：一种有与单坐标轴平行的抛物截面和与该轴垂直的椭圆截面的平面美国传统〔puncheon〕A piece of broad, heavy, roughly dressed timber with one face finished flat.半圆木料：由圆木料对剖成的横截面为半圆的木料美国传统〔resistivity〕Electricity The resistance per unit length of a substance with uniform cross section.【电学】 电阻系数：有均质截面的某一物质单位长度上的电阻美国传统〔section〕The first diagram is a view of the building from the street, and the second shows it in section.第一幅图是由街上看商店的景象，第二幅图是截面图。剑桥高阶〔terete〕Cylindrical but usually slightly tapering at both ends, circular in cross section, and smooth-surfaced.圆柱状的：圆筒状但通常两端微尖、截面成圆形且表面光滑的美国传统The first diagram is a view of the shop from the street, and the second shows it in section.第一幅图是由街上看商店的景象，第二幅图是截面图。剑桥国际This cross-section of a human heart shows how it functions.这个心脏截面图显示了它是如何工作的。剑桥国际You'll need four eight-foot two-by-fours to frame out that wall.你将需要四根8英尺长的截面为2英寸×4英寸的木材来做那堵墙的边框。剑桥国际 |
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