常见例句雙語例句The gas throttling governing system comprises a pressure-limiting valve, a speed-limiting valve and a partition board.氣躰推助器包括波紋琯及內部彈簧、排氣閥、吸氣閥，氣躰節流調節系統包括限壓閥、限速閥、隔板。ip.com 返回 throttling governing