飞机采用非气密舱和四台动力不足的涡轮螺旋桨发动机，使它仅仅适用于低-中空飞行。
The aircraft has an unpressurised cabin and four underpowered turboprop engines, making it only suitable for low- to medium-altitude flight.
其设计特点主要包括超安静涡轮螺旋桨发动机，真实视觉窗户，动力为0.55马赫，最大航程为800海里。
It features ultra-quiet turboprop engines, virtual reality windows and is designed to fly at Mach 0.55 for 800 nautical miles.
航空业的革新集中于民用航空喷气式发动机的研发，首先是涡轮螺旋桨发动机，后来是纯粹的喷气机。
Innovation in aviation has centered on the development of the jet engine for civil use, first in a turbo propeller form and later as a pure jet.
本文简要叙述涡轮螺旋桨发动机——WJ9的主要技术途径，同时对该发动机的研制经验作了综合评价。
The paper describes in brief the principal technical approach in design and development process of a new turboprop engine WJ9, and the synthetical appraisal of the project experience is also made.
该船的主机为单作用，二冲程，带涡轮增压器的十字头柴油发动机，并且螺旋桨为定距桨。
The vessel to be propelled by a single-acting two stroke supercharged cross head Diesel engine, acting to a fixed pitch propeller .
应该指出，强调在这本书是关于在涡轮喷气发动机，并没有特殊的部分涉及与螺旋桨涡轮发动机。
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.
应该指出，强调在这本书是关于在涡轮喷气发动机，并没有特殊的部分涉及与螺旋桨涡轮发动机。
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.
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