P99

名词 n.

英文释义

名词 n.
  1. P99; Ellipsis of NIOSH P99.; P99 standard uncountable
  2. P99; Ellipsis of NIOSH P99.; P99 filter countable

词形变化

P99s plural

词汇关系

相关词
N99 R99
并列词
R100 P100 N100 (99.97% filtration)

词源

From Initialism of oil-Proof with 99% filtration efficiency in NIOSH air filtration ratings.
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