elimination of bite block 去除牙垫
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The elimination of surface defects has indicated that proper selection of sand properties are important to improve the surface quality of gray iron cylinder block and head castings.
实践结果表明型砂性能对于铸件表面质量有着重要的影响，选择合适的型砂性能能够显著提高铸件表面质量。
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