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7)"the ratemeter" ZSB, the hypothesis rotational speed on ZSB may the direct readout.
(8)"the timer" KT3, for the number explicit time relay, the hypothesis operating region is 0-99min, when this system work, is equipped with the time memory function, namely suspends the work when the midway, when like presses down SB4, the system will maintain remembered, after will treat restarts, the operating time operating time will accumulate in the original time, until achieved hypothesis when operating time operating time the system will stop moving

(7)"The ratemeter"ZSB,the hypothesis rotational spead on ZSB may the direct readout
(8)"The timer"KT3,for the number expticit time relay,the hypothesis operating region is 0-99min,when this system work,is equipped with the time memery function namely suspends the work when the midway,when like presses down SB4,the system will maintain remembered,after will treat restarts,the operating time operating time will accumulate in the original time,until achieved hypothesis when operating time operating time the system will stop moving

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回贴主：
转速表
tachometer
定时器
timer

(7)“转速表”ZSB，设定的转速在ZSB上可直接读出。
Tachometer ZSB, the setted rotary speed can be read directly on ZSB。
（8）“定时器”KT3，为数显式时间继电器，设定工作范围为0-99min，本系统工作时，设有时间记忆功能，即在中途暂停工作时，如按下SB4时，系统将保持记忆，待重新启动后，工作时间在原时间上累计，直至达到设定的工作时间时系统停止运行
Timer KT3, a digital-display time relay, working range: 0-99min, this system has a time memory function while working, i.e.,if the system is paused midway, for example if SB4 is pressed, the system will keep memory, when it's restarted, the working time will be accumulated from the last time, and the system will continue work until reach the setted working time.