通过减压阀，调节气压，使线压得到有效的控制。
The reducing valve is used to regulate the air pressure and to effectively control the lineal pressure.
“黄金秘笈”指标包括：黄金线 鳄鱼线 品种强弱 权证趋势看盘 AR-24节气 MACD实战 六大指标；
"Secrets of gold" indicators include: Gold Line crocodile species line the strength of the trend of E Kanpan AR-24 solar terms of actual combat MACD six indicators;
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