It is shown that the curves between the strength of plaster sample and the sand-binder ratio are hyperbolic, but that the curves between the strength of mixed sample and the sand-binder ratio are parabola.
无论采用何种养护方式,石膏样的强度与砂胶比呈双曲线关系,而混合样的强度变化规律则呈抛物线变化。
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