Now both sides of the cylinder are used to compress gas, one side being in suction when the other is in compression.

气缸的两侧都用于压缩气体，一侧吸入气体时另一侧压缩气体。

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Now both sides of the cylinder are used to compress gas, one side being in suction when the other is in compression.

气缸的两侧都用于压缩气体，一侧吸入气体时另一侧压缩气体。

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