The ram jet is the simplest of the three . 冲压喷气发动机是这三种最简单的一种。
The turbojet and the turboprop are much more satisfactory for airplanes . 涡轮喷气发动机和涡轮螺桨发动机更适用于飞机。
Sixty-five percent of the special heat resistant metal in a jet engine is made of cobalt . 喷气发动机中65%的特殊耐热金属材料是用钴制造的。
Unlike a rocket engine, the jet engine, as you know, is an "air breather" . 正如你们所知道的，这种喷气发动机与火箭发动机不同：它是“空气喷气发动机”。
He leveled the t-33 jet, then put the nose down sharply and began, a dive into a second loop . 他拉平“T-33型”喷气发动机，接着猛然俯冲，开始翻第二个筋斗。
The turboprop engine is very much like the turbojet. it has an additional part, a propeller . 涡轮螺桨发动机与涡轮喷气发动机十分相似。它多了一个螺旋桨部件。
The rockets give the planes and missiles enough speed to make the ramjet engine workable . 这种助推火箭为飞机和导弹提供足够的速度，以使冲压式喷气发动机可以开动工作。
The jet engine requires a huge scavenging system sometimes using half as much power as the tunnel itself in order to keep contamination low . 喷气发动机试验要求庞大的排气清除系统，以减轻污染，该系统有时要耗去风洞本身功率一半之多。
Jet engines with which most modern high-speed aircrafts are equipped develop thrust on the same principle as the propellers of conventional aero-engines . 大多数现代高速飞机装备的喷气发动机产生推力的原理，与普通航空发动机的螺旋桨相同。
A 500 - reindeer power jet turbine engine 有500驯鹿力的喷气发动机引擎
