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It will be noted that the emphasis in this book is on the turbo-jet engine and that no special part deals with the propeller-turbine engine. 應該指出，強調在這本書是關於 在渦輪噴氣發動機，竝沒有特殊的部分涉及 與螺鏇槳渦輪發動機。 www.wangchao.net.cn