In this paper, the principles and ways are expounded on sealing metal cans with reference to dynamics material study and shaping theory.
本文从力学、材料学、成形理论多方面论述了金属罐头的封口原理与方法。
Studying university spirit contributes to deepen the cognition of universities'essence and perfect the university theory, which also is a necessary supplement for material study.
对大学精神的研究有助于进一步加深对大学本质的认识，丰富和完善大学理论，是对大学物质层面研究的一种必要的有益的补充。
Studying university spirit contributes to deepen the cognition of universities'essence and perfect the university theory, which also is a necessary supplement for material study.
对大学精神的研究有助于进一步加深对大学本质的认识，丰富和完善大学理论，是对大学物质层面研究的一种必要的有益的补充。
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