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炭黑沉积
auto. soot deposit
火花塞炭黑油烟沉积
auto. sooty carbon
deposit燃烧室炭黑黑烟沉积
auto. sooty carbon
炭黑沉积
met. carbon-black deposition
炭黑沉积
: 2 phrases in 1 subject
Automobiles2