ducted的音标：ducted的英式发音音标为：[dʌktɪd]ducted的美式发音音标为：[dʌktɪd]...

管道中的...

At first, the thermodynamic calculation of Solid Ducted Rocket is researched.在此基础上,首先对固体冲压发动机热力计算展开了研究分析.Sound cover allowsa ducted cooling air outlet , from side only or from both front and back.隔音罩引导冷却空气从一侧或两侧及背面排出.So,...