The black material is considered as carbon deposition, which is formed by oily-liquid medium fission product (mainly carbon black) covering inside crack during the discharge process of pulse current.
See the rear of the discharge of so many black mass of gas.
看到车尾排出的那么多黑糊糊的气体。
3
Firstly, it was contrastively studied that the nanometer carbon black was oxidized by two kind of oxygen plasma: radio frequency discharge (RF) and dielectric barrier discharge (DBD).