機器
appliance
boiled
calcium
chloride
clean
cleaning
closeup
coarse
crystal
crystalline
descaling
detail
detergent
dishwasher
dishwashing
dissolve
environment
grain
granulated
granule
hard water
household
industrial
ion
kitchen
large
magnesium
mineral
piece
preventing
pure
salt
salted
scale
sodium
sodium chloride
soft water
soften
softener
softer
spoon
top view
washer
water
white
wooden