... Marshall refiner 马歇尔精制机 melt refining 熔融精制 melting refining process 熔融精制过程 ...
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That is to treat LD31 alloy by selecting reasonable chemical components and strengthening melt refining.
提出了选择合理的化学成份和加强熔体精炼等方法，对LD31合金进行处理。
The invention relates to metallurgy and foundry engineering, in particular to producing a monocrystalline structure and to a melt refining associated therewith.
本发明涉及一种生产超纯金属以及由其制造的单晶体的方法。
Occasionally, a bubble is not removed during refining, a sand grain refuses to melt, a tremor in the tin puts ripples into the glass ribbon.
"有时候，在提炼的过程中会出现这些情况：一个气泡没有被移除，一个砂粒没有熔化，（熔融的）锡的一次颤动把波纹带进了玻璃带中。
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