【机】 falling
be missing; decline; drop; fall; lag behind; lower
film; membrane; theca; velamen; velum
【化】 membrane
【医】 coat; envelope; film; lemma; membranae membranae; membranae membrane
panniculus; theca; thecae; tunic; tunica; velamen; velamenta
velamentum
alembic; retort
【化】 alembic; distillator; distillatory (vessel); distiller