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

21d litter weight

accumulation of litter forest

Acer buergerianum leaf litter

animal litter

average litter size

biomass of forest litter

Branch litter

bryophyte and litter layer

built-up-litter

Carex lasiocarpa litter

CO2 release of leaf litter

decomposition of foliar litter