To develop conical cavities during solidification.

形成缩管凝固时形成缩孔.

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This thesis summarized the development and characteristic of numeric control technique and its main application fields.

本文总结了数控技术的发展、特点及主要应用领域,确定了数控缩管机的研制目标.

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Thermal control, Teflon casing, the three - tier insulation lines, electronic tools, instruments and other electronic goods sales.

热缩管, 铁氟龙套管, 三层绝缘线, 电子工具, 仪器仪表等电子行业物资销售.

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In the end, it prospected the future trend of numeric control contracting pipe machine.

最后, 文章展望了数控缩管机的发展趋势.

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