['piːp'iː'ef]

['piːp'iː'ef]

n.磅;生产可能性边界(Production Possibipty Frontier).

ppf的相关资料:

临近单词

PP
pph.
PPpve
PP-MA
Ppepper
PPADPCM
PP-WP
PPD-S
PPD-T
ppeboot
ppermint