Molecular formula :
nature : Apart from 0 ° and 90 ° direction of the shop floor, the other ply accordance size equal to the contrary symbols ply (± θ) pairs laying the laminate. with only one pairs of ply laminate different bias, balanced laminates may have to ply. If [0 / ± 30 / ± 45 / ± 60/90], is a balanced laminates. The balanced laminates under plane stress was orthotropic.
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