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The gas throttling governing system comprises a pressure-limiting valve, a speed-limiting valve and a partition board. 氣體推助器包括波紋管及內部彈簧、排氣閥、吸氣閥，氣體節(jié)流調節(jié)系統(tǒng)包括限壓閥、限速閥、隔板。 ip.com