The extrusion and piercing die was developed based on the technical analysis on the shaping characteristics of deep taper pipe with hole.
针对带孔深锥形管件的成形特点进行了工艺分析，确定了成形方案，设计了锥形管挤压模和冲孔模。
The author proposes adopting the following means on company law to regulate illicit associated transactions: introduce abroad "Principle of Piercing the Corporate Veil "and "Deep Rock Doctrine ";
作者建议采用下列公司法上的手段来规制非正当关联交易：引进国外的“刺破公司面纱原则”和“深石原则”；
The author proposes adopting the following means on company law to regulate illicit associated transactions: introduce abroad "Principle of Piercing the Corporate Veil "and "Deep Rock Doctrine ";
作者建议采用下列公司法上的手段来规制非正当关联交易：引进国外的“刺破公司面纱原则”和“深石原则”；
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