The "P" printed on abrasive papers stands for "P-grade," which indicates the paper's grit size according to a specific grading system established by the Federation of European Producers of Abrasives (FEPA). This system categorizes abrasives based on the size of the particles used, where a higher "P" number corresponds to finer grits. For example, P120 indicates a coarser grit, while P400 signifies a much finer abrasive. This standardization helps users select the appropriate abrasive for their specific sanding or polishing tasks.
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The pp stands for "printed pages". 16pp = 16 printed pages.
The Lincoln cent does not use a "P" mint mark. The coin was struck in Philadelphia.
2012
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what does tracem-p stand for
P. J. Lancelot Smith has written: 'Test papers in mechanics and physics'
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