Ring - stiffened cylinder is one of the most important structure types in submarine.

环肋圆柱壳是潜艇耐压壳体的一种主要结构形式.

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The characteristics, structure, types, and status & development of fine - blanking press have been introduced.

介绍了精冲机的特点 、 组成 、 分类以及发展现状 和 趋势等.

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The main functions and structure types of specialty auxiliaries and additives for organic pigment were introduced.

介绍了有机颜料专用助剂与添加剂的主要作用和产品的主要结构类型.

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