弯头 DN 80-5.590EL

DN80-Ⅰ-5.5 90EL

47021 fm600-1.6 δ=62

1 CFM 1600-0.25

WN25B)-16M

PL 80(B)-10 FF

IF 450-600 RF

pl500-10ff

PL100(B)-16 RF d=880 n=24 L=30 C=32 f1

PL 150-6 RF D

47023 rf1400-0.6 ÃÆRF S/70-165s=9.6400- K= L

PL80-16RF 16MnD

BL65-2500RF0-3014 C=1