Terminal checking the circuit and control dial protecting setting is normal or not.
定期检查电路及控制仪表的各种保护设置功能是否正常。
Press on the control dial so it clicks, and the display zooms in to allow accurate focusing.
按控制转盘因此它的点击次数,并显示放大,以方便准确对焦。
Constant flow rate manually adjustable by control dial on the front panel, Power-ON led indicator.
通过控制面板上的调节旋钮可对流量进行手动调节,还带有电源指示。
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