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PN Regulation
Abbreviation of "Particulate Number Regulation"
The number of very fine PM are counted, and kept within a standard value. The PN regulation measures the amount of particles emitted, not by weight, but by the number of particles.
Abbreviation of "Particulate Number Regulation"
The number of very fine PM are counted, and kept within a standard value. The PN regulation measures the amount of particles emitted, not by weight, but by the number of particles.