( ( The ( parameter khdif ) ) ( ( controls ( the ( high ( frequency ( diffusion amount ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN parameter) (NN khdif)) (VP (VBZ controls) (NP (DT the) (JJ high) (NN frequency) (NN diffusion) (NN amount))) (. .)))
The parameter khdif controls the high frequency diffusion amount.
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (DT a) (NN substance)))) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (DT a) (JJR higher) (NN amount)) (PP (IN toward) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJR lower) (NN amount) (NN diffusion)))))))))) (. .)))