窗的开启角度可以根据需求调节。
为了影响需求，中央银行通过调节银行储备货币的供应来抬高或降低短期利率。
To influence demand, the central banks move a short-term interest rate up or down by adjusting the supply of bank reserves.
在智能网里，新能源的供应时断时续并不是大问题，因为智能表和其他技术可以调节用电需求，如果发电过多可以储存起来。
On a smart grid, intermittence is less of a problem because smart meters and other technologies can be used to manage electricity demand and to store power when too much is being generated.
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