... 中频感应炉medium-frequency induction furnace 保温炉maintaining furnace 高频感应炉Efco-Northrup furnace ...
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ignition maintaining furnace 点火保温炉
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However, maintaining a proper proportion of helium in the furnace atmosphere is necessary to improve HGM surface smoothness.
但是，在载气中保持适当体积分数的氩气，有利于提高玻璃微球的表面质量和成品率。
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