间隔符号字典 interval symbol dictionary
固定标识间隔符号方式 constant mark and space code
符号间隔 [计] mark space ; TSYM
把数据率减少一半，就能使每一符号间隔的持续时间延长一倍。
Reducing the data rate by one-half will double the duration of each symbol interval.
在给定带宽条件下，将数据传输速度减慢一半，就能使每一个符号间隔的持续时间延长一倍。
Transmitting the data half as fast for given bandwidth will double the duration of each symbol interval.
以点、横画、间隔的安排来代表字母、数字或标点符号的系统。
System for representing letters, numerals, and punctuation marks by a sequence of dots, dashes, and spaces.
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