常見(jiàn)例句用作形容詞 (adj.)Pneumatic signals will travel only at sonic speeds.氣動(dòng)信號(hào)的傳輸速度僅僅相當(dāng)于音速。When were pneumatic tyres invented?充氣輪胎是什么時(shí)間發(fā)明的? 返回 pneumatical