the cold hardening resin sand
the cold hardening resin sand
冷硬化树脂砂
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The experiments prove that after being modified treatment, the addition of cold-hardening resin is cut down, so that the cost of cold-hardening resin sand can be decreased.
实践证明：采用适当工艺附加少量硅酸乙酯，可减少树脂加入量、降低冷硬树脂砂成本。
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