Changing the velocity changes the pressure in the water (see Bernoulli) altering the chemical balance and depositing minerals in the screen. Screens may be cleaned chemically by use of acids (usually muriatic or acetic). Acetic is less likely to also dissolve the screen. Mechanical means such ...
High-performance Alloy Technology Polyester nano-alloy (Impact resistance, Chemical resistance) Automobile exterior parts such as door handles PBT / ABS alloy (Impact resistance, Dimensional stability, Heat-cycle resistance) PBT / PET alloy (Low warpage, Good appearance) Electric / electronic component...
OutlineChapter10Crystals,Ions,andSolutions 10-1.IonicandCovalentCrystals A.Mostsolidsarecrystalline,meaningtheparticlesthatcomposethemare arrangedinrepeatedpatterns. B.Amorphoussolidshaveparticlesirregularlyarranged. C.Crystallinesolidsfallintofourclasses: 1.Ionic 2.Covalent 3.Metallic 4.Molecular D.Ioniccrystals...