The surface quality of Y2 frame and the percentage of end product can not be compatible, because the toughness and mobility of the moulding sand in clay sand are antagonistic each other.

型砂韧性和流动性在粘土砂中是互相对立的，它使Y2机座表面质量和成品率不能兼顾。

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1 white translucent translucent particles particles, which may be entrained metal chips and sand, containing visible black white grain percentage more than 1 visual inspection.

外观白色半透明颗粒半透明颗粒，其中不得夹带金属屑和砂粒，含有可见的黑点粒白色分数不超过1目测。

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And the effects of bentonite percentage and compactibility on elastic modulus of molding sand were experimentally st...

试验研究了膨润土含量和紧实率对型砂弹性模量值的影响。

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