针对普通胶筒密封遵循接触式密封理论所存在的问题，提出了封隔器胶筒“完全防突”的设计理论。
In order to solve the problem concerning the contact-sealing theory for the common packing element, the design theory of "complete anti-extrusion" is put forward.
针对传统可倾式渗碳转筒炉无法精确控制碳势的缺点，设计制作了可控气氛转炉并进行了试生产。
Considerate that normal rotary hearth furnace can't control the carbon potential precisely, we designed rotary hearth furnace with controlled atmosphere and then managed to use it in manufacturing.
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