浇不足是焦炉炉门铸件常见铸造缺陷。

Misrun is the common defects found in oven door castings process.

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砂型铸件上可能发现下列哪种缺陷？

Which of the following is a discontinuity which might be found in sand castings?

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砂型铸件上可能发现下列哪种缺陷？

Which of the following is a discontinuity which might be found in sand castings?

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