聚酯很坚韧、不褪色、耐腐蚀和抗化学作用，但容易积累静电。
Polyesters are strong, colourfast, and resistant to corrosion and chemical attack but tend to build up a static electric charge.
水—砼块相互作用前后砼块剪切面上的抗剪强度及因水化学作用而导致剪切面上的抗剪强度的增量均较好地满足摩尔—库仑强度准则；
The shear strength and the strength increments of concrete are both obeying to Mohr-Coulomb rule before and after the water-concrete action.
水—砼块相互作用前后砼块剪切面上的抗剪强度及因水化学作用而导致剪切面上的抗剪强度的增量均较好地满足摩尔—库仑强度准则；
The shear strength and the strength increments of concrete are both obeying to Mohr-Coulomb rule before and after the water-concrete action.
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