从主存储器读数据需要较多的CPU周期。
Reading the data from the main memory requires more CPU cycles.
光电回路操作控制回路准备仪器进入新的周期和发出远距离读数。
A photoelectric circuit operates the control circuit to prepare the instrument for a new cycle and to update the remote readout.
现在,对很多没有计算机操作界面的指针式仪表的检定通常都是由人工来读数和调节,然而,人的眼睛在大量的视觉工作之后会出现视觉疲劳,造成了检定精度低,检定周期长。
But, usually, detecting of the gauge with pointer is by manual work, after long time for vision work, eyes will get tired, and this leads to low detecting precision and long detecting period.
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