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- ppb， parts per billion
- ppb， part（s） per billion
- p.p.c.
- pp. c.
- ppc
- ppc.
- p,p'-carbonyldibenzoic acid
- ppcc
- p-p chain
- ppc-- paper partition chromatography
- ppc--platform position computer
- p. p. c., pour prendre congè
- p. p. c., pour prendre congé
- ppc, ppc.
- ppc， paper partition chromatography
- ppd
- ppd.
- p,p'-diaminodiphenyl
- p,p'-diaminodiphenyl--benzidine
- p,p'-diaminodiphenyl; benzidine
- p,p'-diaminotriphenyl-methane
- p,p'-dibenzoylquinone-dioxime
- p,p'-dichlorodiphenylmethyl carbinol
- p,p'-dimethoxybenzoin
- p,p'-dimethoxybenzoin-- anisoin
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