也可用于手动控制方式 P MANUAL
第二个必要的条件是，操作者可以调节感光，曝光，快门以及压缩质量，以手控的方式拍摄。
The second obligatory condition is the possibility to shoot in manual mode, when sensitivity, exposure, diaphragm, and the compression quality can be adjusted by the user.
扫频信号发生器有自动扫频、手控、程控和远控等工作方式。
Sweep sweep signal generator with automatic, manual, program-controlled and well-controlled manner, and so on.
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