Word

HSK	Not in HSK
FREQUENCY	Unknown

可變滲透性模型 kě biàn shèn tòu xìng mó xíng

Varying Permeability Model (VPM), (used to calculate decompression schedules in diving)

可 kě HSK 2	may, can, -able; possibly
變 biàn	change, transform, alter; rebel
滲 shèn	soak through, infiltrate
透 tòu HSK 5	penetrate, pass through
性 xìng HSK 4	nature, character, sex
模 mó HSK 5	model, standard, pattern; copy
型 xíng HSK 5	pattern, model, type; law; mold