If the vacuum near the cathode is too poor, it will generate spark, gas ionization and ion bombardment on cathode, which can result in a fast attenuation of the emission current.
如果碳纳米管阴极附近的真空度太低，将产生打火、气体电离、离子回轰阴极等问题，将导致阴极发射电流的迅速衰减。
Associated with ion current detection device, this system can test and compare different kinds of spark plugs.
该系统配合火花塞离子电流检测装置，可以实现对不同火花塞热值进行测试比较的目的。
The spark plug ion current signal carries along rich information about the engine combustion process.
火花塞离子电流信号携带着丰富的发动机燃烧过程的信息。
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