Parts-per notation
Автор:
Jesse Russell,Ronald Cohn, издатель:
"VSD", ISBN:
978-5-5110-9053-5
High Quality Content by WIKIPEDIA articles! In science and engineering, the parts-per notation is a set of pseudo units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quant
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