观看免费视频 Morse Code Flashing Light

(33.3 MB) 添加日期21 Feb 2017 播放134次 教育 灯光 安全 科学 Tutorial
重置
Zoom out
Zoom in
Morse Code Flashing Light

动画说明:

Video introduces the Morse characters L Q R Z F X Y as sent by flashing light by ships at sea, providing a number of drills to practice basic recognition.

|