经理论计算和实验验证得出发烟系统的最佳混合比。
The optimum mixture ratio was given out by theoretic calculation and experiments.
本文采用脲醛树脂为改性剂，硅酸乙酯为增强剂，对呋喃树脂砂进行改，并通过对力学性能的研究，确定了最佳混合比。
In this paper, with modifier UF resin and strengthening agent ethyl silicate, furan resin was modified. By studying the mechanics properties of the resin, the best blending rate was decided.
混合比：七十年来06年创最佳业绩，07、08将继续稳固成果。
COMBINED RATIO: BEST RESULT IN SEVEN DECADES IN '06, REMAINING STRONG IN' 07 AND '08.
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