As long as the valve closure effect is good, when the pressure, high pressure cut-off valve is closed, the back-end pressure volume smaller, pressure.

只要阀门关闭效果良好，保压时，高压截止阀关闭，后端压力容积变小，压力增大。

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The daily on-balance volume (OBV) closed above resistance, line d, that does back to August.

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The weekly on-balance volume (OBV) tested support, line d, on the correction and closed back above its WMA last week.

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