如何解决橡胶与金属的粘接问题，现已成为研究的热门。
And how to solve rubber to metal bonding has already become emphasis of the research now.
真空自耗电弧炉是熔炼钛、锆等稀有金属的主要工业手段，如何提高熔炼工艺水平，保证产品质量，提高经济效益，已成为稀有金属行业广泛关注的问题。
With requred to the melting of rare metals the major issues are the development of melting technology, assurance of product quality, and increase in production efficiency.
因此，如何提高薄壁铸件在金属型中的充型能力成为制约金属型薄壁铸造应用的一项瓶颈技术。
Therefore, improving the filling capacity becomes a core problem for the application of die-casting in thin-wall casting.
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