Possess the arc push current device. It's not easy to change.
设有推力电流装置,不易发生引弧不良和焊条粘附现象。
Cascade JFET constant current device is of very high dynamic impedance.
串级JFET恒流器件具有非常高的动态阻抗。
Rain bucket should be tested by hydraulic bucket siphon rain, and with the anti-eddy current device.
雨水斗应采用经水力测试的虹吸式雨水斗,且带有防涡流装置。
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