American Institute Time Hull Form {= AITH Form}
exponent form Newton backward interpolation operator in power exponent form
form factor [= wave form factor]
metric normal form of quadratic form
the canonical form of a quadratic form
Unitary-form (U-form) firm
represeuting a complete form sence f rom one thousaud Chinese feet and a detail form from one hundred Chinese feet
accumulation of litter forest
Acer buergerianum leaf litter
biomass of forest litter
bryophyte and litter layer
Carex lasiocarpa litter
CO2 release of leaf litter
decomposition of foliar litter