Close the circuit and you'll see a blue spark.

接通电路你就会看到一个蓝色的电火花。

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The strong electromagnetic interference generated in high power TEA CO2 laser system mainly comes from the main discharge circuit, pulse spark switch and power supply.

大功率TEA CO2激光器系统产生的强电磁干扰主要来源于激光器主放电回路、脉冲火花开关和电源。

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The solid state switch device uses power MOSFET as soft switch, so, the spark doesn't appear when the circuit turn on or turn off.

固态开关部件采用电力MOSFET做软开关，使得电路通断时，不会出现打火花的现象。

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He checked to see if the battery terminals were dirty, tested the spark plugs and the alternator, inspected the grounding bolts for signs of a short circuit.

WSJ: Diagnostic Tools to Unleash Your Inner Mechanic

My dad was an engineer and I spent countless hours tinkering with him on the DIY projects he had going on around our house, from using an oscilloscope and hand tools, to being allowed to drive the tractor, learning how to set spark plugs and change a timing belt, swapping out alternators, building a computer and soldering circuit paths on to an early motherboard .

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