There is no risk of {HEAD ~ rich combustion} at {TAIL ~ the discharge electrode portion} due to the mixed fuel air mass having a high fuel density, and consequently problems such as wear on the spark plug or smoke generation can be avoided 
at
There is no risk of { HEAD ~ rich combustion } at { TAIL ~ the discharge electrode portion } due to the mixed fuel air mass having a high fuel density , and consequently problems such as wear on the spark plug or smoke generation can be avoided
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