If the person is within five feet, use the fill-flash mode; beyond five feet, the full-power mode may be required.
如果人物在五英尺内,可使用充分闪光模式,在五英尺外,则需要使用完全闪光模式。
This design can be used in low-power monochromatic mode for reading, but can also switch to backlit colour mode when needed.
该设计可用于低功耗的单色阅读模式,但需要时,也可切换至背光彩色模式。
One is attenuation control mode and the other is power control mode.
一种是衰减比例控制模式,另一种是功率控制模式。
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