In data transmission, this is limited to a variable time interval between characters, and is often known as start-stop transmission.
在数据转输中，仅指相邻字符间的时间间隔不规则。这种传输方式通常称起止式传输。
An electric shock and various life-saving automatic pressure instrument which mainly comprises an air transmission device and a motor start-stop and positive inversion control circuit;
一种触电及各类生命抢救自动气压仪，主要由空气输送装置以及电机启停及 正反转控制电路组成；
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