It provides a theoretical basis for designing the mechanical seal ring equipment.
这为合理设计机械密封装置提供了理论依据。
On this basis, and then completed with the mechanical structure and optical design.
进而在此基础上完成了光学跟机械结构的设计。
Springs are fundamental mechanical components which form the basis of many mechanical systems.
弹簧是组成众多机械零件中的基本部件。
Springs are fundamental mechanical components which form the basis of many mechanical systems.
弹簧是组成众多机械零件中的基本部件。
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