单词	pf试验
释义	PF试验PF test{penetration fracture test}
随便看	linear ordinary differential equation linear organization linear oscillation linear oscillator linear papilloma linear papilloma-- linear ichthyosis linear papilloma; linear ichthyosis linear parallax linear parallelism linear parameter linear parameter estimation linear parametric amplifier linear park linear partial differential equation linear partical differential equation linear particle accelerator linear path system linear patrol linear pattern of chains linear peak carrier responsive detector linear pencil linear peptide linear perspective linear perspective drawing linear perthite