由于喷涂线呈非直线分布，喷涂材料热胀冷缩产生的应力不会导致填充结构变形。
As the spray coating line is in the non-linear distribution, the stress of a spray coating material due to thermal expansion and contraction can not deform the filling structure.
温度收缩系数是反映材料热胀冷缩特性的参数，贫砼基层材料的温缩特性又直接影响到温度应力。
Temperature contraction coefficient is a parameter for material expansion and contract property when temperature becomes high ot low.
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