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Term | 术语 | Definition | 定义 |
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reference tape | 基准基线尺
| A BASE TAPE employed solely for use as a STANDARD of comparison. Also called standard tape. | 一种专门作为比较标准的基线尺，亦称standard tape（标准基线尺）。 |
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reflectance | 反射比，反射系数
| The ratio of light given off by an object to the amount of light striking the object, expressed as percentage. | 某一物体发出的光与到达这个物体的光量之比，用百分数表示。 |
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reflected wave | 反射波
| See WAVE. | 由于反射而改变方向的波。 |
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reflecting projector | 反射投影器
| See PROJECTOR. | 摄影测量中，可将航摄像片的影像投影到地图上的仪器。通过变换投影器透镜的位置，可以改变所投影影像的比例，通过倾斜台面可校正像片的斜度。 |
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reflecting telescope | 反射望远镜
| See TELESCOPE. | 使用凹镜聚集光束的望远镜。 |
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reflection | 反射
| The process whereby a surface of discontinuity turns back a portion of the incident RADIATION into the medium through which the RADIATION a... more | 由不连续表面将一部分入射能量返回到原来所通过的介质的过程。参见surface reflection(表面反射)。 |
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reflection: angle of | NULL | See ANGLE OF REFLECTION. | NULL |
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reflectivity | 反射率，反射系数
| The ratio of the RADIANT ENERGY reflected by a surface to that incident upon it. | 投射于物体表面的辐射能被反射的比率。 |
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reflector | 反射器，反射镜
| A device capable of or intended for reflecting particles or RADIANT ENERGY. See RADAR REFLECTOR. | 能够用于或专门设计用于反射粒子与辐射能的装置。参见radar reflector（雷达反射器）。 |
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refracted wave | 折射波
| See WAVE. | 由于折射而改变方向的波。 |
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refracting telescope | 折射望远镜
| See TELESCOPE. | 通过使用单个透镜或多组透镜聚集光束的望远镜。 |
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refraction | 折射
| The process in which the direction of energy propagation is changed as the result of a change in density within the propagating medium, or a... more | 能量传播方向改变的过程，这是由于传播介质内部密度的变化，或者能量通过了密度不同的两介质的界面。 |
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refraction: angle | NULL | See ANGLE OF REFRACTION. | NULL |
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refraction: astronomical | NULL | The apparent displacement of an object that results from LIGHT RAYS from a source outside the ATMOSPHERE being bent in passing the ATMOSPHE... more | NULL |
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refraction: atmospheric | 大气折射
| Refraction resulting when a ray of radiant energy passes obliquely through the atmosphere. It may be called astronomical refraction if the r... more | 辐射能射线斜穿过大气层时发生的折射，如果射线由外太空进入大气层，则称为大气折射。如果射线由地球表面或附近的某点发出的，则称为地面折射。 |
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refraction: coastal | 海岸折射
| A small change in the direction of travel of a RADIO WAVE when it crosses a SHORELINE obliquely due to a difference in conducting and refle... more | 无线电波斜向经过海岸线时，由于陆地和水域传导和反射性质的不同，而导致的电磁波方向微小的改变。 |
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refraction: coefficient of | NULL | The ratio of the ANGLE OF REFRACTION at the point of observation to the angle at the centre of the EARTH subtended by the arc connecting th... more | NULL |
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refraction: index of | NULL | The ratio of the sine of the ANGLE OF INCIDENCE to the sine of the ANGLE OF REFRACTION. | NULL |
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refraction correction | 折射改正
| A CORRECTION due to REFRACTION, particularly such a CORRECTION to a SEXTANT ALTITUDE, due to ATMOSPHERIC REFRACTION. | 由于折射而进行的改正，特别是由于大气折射引起的六分仪高度改正。 |
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refraction of light | 光折射
| The bending of LIGHT RAYS in passing from one transparent medium into another which has a different INDEX OF REFRACTION. | 光线从一种透明介质到另一种折射率不同的介质所发生的转向。 |