The value of currencies was meant to be regulated by supply and demand the market mechanism .
货币的价值应由供求关系市场机制来决定。
The graft yield value can be regulated by the concentration of monomer.
接枝率的大小可以用单体浓度来调节；
The fan was usually controlled by hand in the small cement grinding station; the required air of the bill was regulated by adjusting the fan opening value, which wasted a mount of electric energy.
在小型水泥粉磨站中，风机通常采用人工手动进行控制，即手动调节风机阀门开度来调节球磨机的需风量，此种控制方式造成了电能被大量的损耗。
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