reverse curvature 反曲率 centre( ter) n. 中心,中央;中心区 vt. 集中,使聚集在一点 vi. 居中,集中,被置于中心 semi spherical 半球形 near spherical 近似球形,类球状 right of centre a. (政治倾向)中偏右的 centre stage n. 中心舞台;最重要位置 centre runner 中注管 最新...
网络释义 1. 球曲率中心 球鼻曲率,bow... ... ) spherical lines of curvature 球面曲率线 )centre of spherical curvature球曲率中心... www.dictall.com|基于 1 个网页
A single slide or cine projector (2) for vertical projections, is positioned at the centre of curvature of the screen (1) so that the projected images surrounds the observer from both sides and above. Pref. the projection screen (1) extends over a spherical angle of more than 180 degrees...
This mirror has its focal distance periodically controlled by a piezoelectric action. The curvature remains practically spherical between the two extreme curvatures. The mirror (2) is fixed to the base (1) by a piezoelectric column (5 or 9), which is activated by an AC voltage, and by a ...
centre of spherical curvature 球曲率中心相关短语 areocentric (以火星为中心的) 火心的 mean axis (椭球的) 中轴 destination (运输问题中心需要点) 需要点 included angle of arch (指中心角) 拱的包角 inferior tide (月球) 下合潮 ground clearance (飞机起落轮中心的) 离地距离 Mangin mirror (消球差...
A single slide or cine projector (2) for vertical projections, is positioned at the centre of curvature of the screen (1) so that the projected images surrounds the observer from both sides and above. Pref. the projection screen (1) extends over a spherical angle of more than 180 degrees...
The system characterises by its position the centre point of a shutter, with the curved image field also concentric to the centre point. The curvature radius of the image field is equal to the system focal length. In the light path sequence, a collector spherical mirror projects an ...
The screen envelopes the opening angle of the mirror. The heat reflecting screen (3) has a spherical shape with a centre of curvature which coincides with the optical centre of the mirror (1). The mirror is also surrounded by a reflector (4) which is spherical and also has its centre ...
The system characterises by its position the centre point of a shutter, with the curved image field also concentric to the centre point. The curvature radius of the image field is equal to the system focal length. In the light path sequence, a collector spherical mirror projects an ...
A mirror (6) is supported on a mounting (7) which is held on these three blocks. The blocks have spherical concave surfaces, the curvature of each being centred on a point (C) which is also the centre of the mirror. A projecting part (9) of the mirror mounting is received in a ...