... 近光前照灯 lower-beam (dipped beam)headlamp 近光束 dipped beam 近光信号灯 pasing (dipped )(low)beam tell-tale ...
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该系统超出了美国当前对前大灯的管理规定，它要求远光光束与近光光束要有单独的开关操控。
This system outpaces current U. s. headlight regulations, which require a separate switch setting for high and low beams.
还研究了超高斯光束通过近轴光学系统时，保持其形状和阶数不变的条件。
The condition has been discussed, under which SG beams preserve their shape and order, while passing through paraxial optical systems.
从近轴波动方程出发推导了窄带和宽带双曲正割脉冲光束的解析传输公式。
Starting from paraxial wave equation, analytical propagation expressions of hyperbolic secant pulsed beams with narrowband and broadband are derived.
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