rise and fall system

A hacker penetrating the IMF system might know which country's currency is likely to rise or fall in value and which government debts are likely to get paid off and which aren't.

侵入国际货币基金组织系统的黑客可以知道哪个国家的货币会升值、贬值，哪个国家的债务有可能偿还，哪个国家不可能偿还。

These companies will rise and fall based on the commodity pricing of basic components, not on the quality of their overall system.

此类公司的成败取决于基本组件的价格变化，而与其整体系统质量关系不大。

To achieve real time automatic levelling and vertical rise up and fall down of the static pile driver′s case, an electro hydraulic levelling system is designed for the static pile driver based on PLC.

为使静力压桩机在工作过程中能够实现实时自动保持机身水平与水平升降，设计了一种基于PLC的压桩机电液自动调平系统。