It is a complex cross-discipline issue to make electronic products of Chinese ancient books.

古籍电子化是一个非常复杂的跨学科问题。

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This technology can produce excellent cold working ingots and sectional materials with complex cross-section or difficult formation.

利用单晶连铸技术可制备优质的深加工坯料、生产复杂截面形状或难加工材料的型材。

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All tunnels have complex cross section with circular, rectangle, arch, ellipse shape, in accordance with the length of the tunnel is divided into short, medium length of the tunnel, long tunnel.

隧道按截面分为圆形、矩形、拱形、椭圆等形状，按照长度分为短隧道、中等长度隧道、长隧道。

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All tunnels have complex cross section with circular, rectangle, arch, ellipse shape, in accordance with the length of the tunnel is divided into short, medium length of the tunnel, long tunnel.

隧道按截面分为圆形、矩形、拱形、椭圆等形状，按照长度分为短隧道、中等长度隧道、长隧道。

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