has dimension has unit 単位を持つ has value 値を持つ permeance (materials science) Λ Permeance is the degree to which a material transmits another substance. permeance (materials science) unit quantity 量 kilogram per pascal second square metre kilogram per pascal seconde vierkante meter perm (0 °C) perm (0 °C) perm (23 °C) perm (23 °C) permeance (materials science) dimension