Fx and the role of fluid in the plunger on the pressure balance, Fy occurred while rotating cylinder to generate torque, rotating drive shaft 5.

Fx与作用在柱塞上的液压力平衡，Fy则产生使缸体发生旋转的转矩，带动轴5转动。

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From the start of 2010 (when China first started publishing quarterly BOP data) we experiment with various currency proportions, before settling on the following composition of FX reserves: 60% held in USD assets, 30% in euros and 5% each in yen and sterling.

FORBES: How Much Longer Can China Accumulate Reserves?