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Φ值标度
desert.	phi scale (根据以2为底的负对数值作为分级界限的沉积物粒度的一种几何(倍频程)级数标度。Φ值标度与 mm 值的关系为 Φ=lg2t/(mm))

值标度: 29 phrases in 15 subjects

Automobiles	1
Aviation	1
Bridge construction	2
Earth sciences	1
Electronics	3
General	2
Hydroelectric power stations	5
Metallurgy	1
Nautical	1
Oil / petroleum	1
Photography	1
Rail transport	1
Remote sensing	1
Technology	7
Telecommunications	1