在开始检测前，检测组件上的所有针形阀都必须关闭。

Before starting test, all needle valves on test kit must be closed.

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完全开启排气针形阀直到从排气连接处的滴漏停止为止。

Open vent needle valve fully until dripping from vent connection stops.

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检测组件上的所有针形阀都必须关闭。

All needle valves must be closed on test kit.

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检测组件上的所有针形阀都必须关闭。

All needle valves must be closed on test kit.

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