Components: compression pumps, catheters, atomizer bottle.
组成：压缩泵，导管，雾化瓶。
As the Roots pump is a non-vacuum inside the compression, the compression ratio is usually very low, so high, medium and vacuum pumps need to pump before.
由于罗茨泵是一种无内压缩的真空泵，通常压缩比很低，故高、中真空泵需要前级泵。
These pumps feature very high flow and high compression pressure (80 to 120 kPa) compared to their sizes.
这些泵的功能非常高流动性和高压缩压力(80至120千帕)相比，它们的大小。
These pumps feature very high flow and high compression pressure (80 to 120 kPa) compared to their sizes.
这些泵的功能非常高流动性和高压缩压力(80至120千帕)相比，它们的大小。
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