extra super超超1Experimental study of rheological property of extra ( super) heavy oil特（超）稠油流變特性試驗研究及應用 2The invention provides an integrated water tank type crystallizer used for casting 7 series extra super duralumin alloy， relating to a crystallizer.用於鑄造7系超硬鋁合金整體水箱式結晶器，它涉及一種結晶器。
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