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- At first, the particle is considered as a highly aberrated spherical lens, so that its focal length is gained, and then the equivalent thin lens is found under the condition of the equal focal length and equal light distance. 首先将颗粒作为高象差的球形透镜求出其焦距,再由等焦距和等光程条件找出与球形透镜等价的薄透镜。
- The distance of a light year boggles the imagination. 一光年的距离大得令人难以想象。
- I groped for the light switch in the dark room. 我在黑暗的房间里摸索着找电灯开关。
- I could see the faint gleam of light in the distance. 我能看见远处微弱的灯光。
- The portrait shows fine effects of light and shade. 这幅肖像画的浓淡色调表现得很好。
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- Now I begin to see light on their good intentions. 现在我对他们的良好动机开始有所领会了。
- The bright light of the car dazzled me. 这汽车的灯光使我目眩。
- Street lighting was dimmed out during the war. 战时街道照明实行半灯火管制。
- He turned off the dash light and drove on. 他关掉仪表板上的灯，继续驱车前进。
- The light was diffused by the leaves. 树叶使光线漫射。
- The light is fading as they gaze into the distance. 她们久久地向远方注视着，光线慢慢暗下来。
- I grope for the light switch in the dark room. 我在黑洞洞的屋里摸索著寻找电灯开关。
- The light bulb in the kitchen burnt out. 厨房里的电灯泡烧坏了。
- A strong light impinged on his eyes. 一道强烈的光刺着他的眼睛。
- He can see a glimmer of light through the curtain. 他能透过窗帘看到一丝微光。
- She runs up the stairs with a light graceful step. 她以轻快优雅的步子奔上楼去。
- We troubled him to turn on the light. 我们麻烦他打开电灯。
- The light of the lighthouse winked in the distance. 灯塔的灯光在远处闪烁。
- A crepehanger usually sees life in a gloomy light. 悲观者常以沮丧态度来看人生。
