The return circuit of the infusion is a high voltage of the closed circuit, which does not disturb the external factor, and is not affected by walking, running, and various vehicles traveling.

输液回路内为闭路高压，不受外界因素的干扰，行走、奔跑或随各种交通工具行进都不影响其正常工作。

youdao

Singapore makes lots of other electronics devices: printers, CD-ROM drives, DVD drives and printed circuit boards -- not to mention DRAMs (memory chips) and the sound cards and graphics cards found in PCs.

CNN: ASIANOW - Asiaweek | Business | Short Circuits

Take an old telephone company: The CEO knows that his future lies with fiber optics and the Internet, not with copper wires and circuit switches.

FORBES: Digital rules

Circuit City has been struggling to turn a profit for the past year and a half, and if history is any guide, the future for Circuit City is not bright.

FORBES: Magazine Article