An improved process for the spin-drawing of high-tenacity, technical-grade yarns is disclosed.

一种改进的旋转过程中的高拉韧性，技术级纱线被披露。

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Generally stated, in another aspect, this invention provides an improved process for producing a fuel gas from coal.

在另一方面，该发明改进了自煤中生产燃料煤气的工艺。

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This paper presents an improved process for the preparation of the novel liquid crystal 5-propyl2-(3,5-difluorophenyl)pyrimidine.

对新型的液晶材料5-正丙基-2-（3，5-二氟苯基）嘧啶的合成路线进行了改进。

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What is core and what is open to an improved process?

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