First Marconi sent the Morse code letter s a distance of 300 feet.
马可尼首先将摩尔斯码的字母s发送了300英尺远。
Eventually, they were able to associate a sequence of code with the letter "F."
最终，他们把一串密码与字母“F”联系起来。
In this secret code each number stands for a letter of the alphabet.
在这组密码中，每个号码代表字母表中的一个字母。
Mnemonics are made up of letter to represent the operation code.
助 记码是由字母组成，以代表操作码。
Explains how to manipulate letter case in your code.
说明如何操作代码中的字母大小写。
Write their full names, three-letter code and one letter code.
请写下它们的全名、三字码与单字码。
Write their full names, three-letter code and one letter code.
请写下它们的全名、三字码与单字码。
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