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Molecular formula : CAS :
nature : the material elements of the chemical bond forms a vibration. It is the molecular bonding of atoms along the axial direction of reciprocating state, or to change the length of the bond vibration. It consists of symmetric stretching vibration (symmetric stretching vibration) and antisymmetric stretching (antisymmetric stretching vibration). If three atomic elements, there are two key length, elongation or shorten the symmetric stretching vibration; One long, one short, or a short length of a antisymmetric stretching vibration.
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