1)surface brightness表面亮度
英文短句/例句
1.The combination of very large radio flux and exceedingly small angular size means that the sources have a fantastic surface brightness.极大的射电流量同极小的角经集于一身,意味着这些发射源有难以置信的高表面亮度。
2.The appearance of a mineral surface judged by its brilliance and ability to reflect light.发光体凭光亮度和反光性来辨别的矿物的表面
3.The light reflected from the surface of the moon.月光从月亮表面反射出
4.To give a smooth, lustrous surface to.打光,擦亮使…表面光滑
5.To adorn with a brightly colored surface.用亮丽的表面装饰.
6.as of wooden floors, for example.例如擦亮木质的表面。
7.A bright surface will reflect sunlight.光亮的表面能反射光。
8.a time when the moon presents a particular recurring appearance.人们所看到的月亮表面发亮的部分。
9.Light streaks on surface of flow are traces of highly reflective flakes.流动表面上的亮条纹是高度反光的薄片的轨迹线。
10.The Effects of Current Density to Surface Morphology and Corrosion Resistance of Bright Ni-Fe Alloy Coating电流密度对光亮镍-铁合金镀层表面形貌及耐蚀性的影响
11.Luminance: The apparent brightness of a light source or surface observed from a specific direction, It is measured in cd/sq.cm. Also called Brightness.亮度:光源或物体表面在一定方向观察所显现的光亮情况。以烛光每平方厘米计。
12.A sheet or surface of glassy and very slippery ice.光滑明亮的表面光亮的和很光滑的冰的表层或表面
13.A thin, smooth, shiny coating.光滑表面薄的、光滑而发光亮的面
14.The wooden surface had a beautiful shine.木质的表面有漂亮的光泽。
15.Smaller, special skin can resist scratching.体积更小,光亮的表面更耐刮花。
16.To polish(a surface) until smooth.磨亮,磨平摩擦(某物品表面)直至光滑
17.bright (steel) bars(高级精整表面的)光亮钢棒
18.a dark region of considerable extent on the surface of the moon.月亮表面一块相当大的阴暗区域。
相关短句/例句
surface brightness表面光亮度
1.The several impostant factors which effect on the surface brightness of PVC profile were concisely discussed.研究了影响PVC型材表面光亮度的几个重要因素,结果表明PVC的混料中的活性碳酸钙、PE蜡及ACR的用量对其光亮度影响较大。
3)Surface brightness of D_3 lineD_3线表面亮度
4)Surface Gloss of Profile Shapes异型材表面光亮度
5)gloss point(釉粉表面)发亮光的温度
6)illuminometer[英][i,lu:mi'n?mit?][美][?,lum?'nɑm?t?]亮度表
延伸阅读
光亮度光亮度Luminance 光亮度(luminanCe) 光亮度是任何面光源在垂直于给定方向的单位投影面积上的发光强度。国际照明委员会把它定义为,含有被研究点的无限小的面积元在给定方向上的发光强度除以该面积元在垂直于该方向的投影面积所得的商。简单地说,光亮度是每单位面积上的发光强度,光亮度又称光度学亮度。 因为烛光是发光强度的单位,面光源的光亮度就可以用烛光/厘米2、烛光/英寸2等单位表示。 用数学式表示光亮度B一dl/dAcos夕,式中夕为观察线和面光源表面垂线间的夹角,八为面光源面积,I为发光强度。参阅“流明”(1 umen)、“发光强度,,(luminous intensity)条。 熙提(s tilb)也是光亮度的单位,等于1烛光/厘米2。欧洲国家常用它,但在美国直接用烛光/厘米2。 在欧洲,有时使用另一个单位阿熙提(a postilb),它等于以1流明/米2的比率发射或漫射光的全漫射面的光亮度。参阅“光度学”(photometry)条。 [普特南(R.C,putnam)撰]
