| 1. | 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。 |
| 2. | 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。 |
| 3. | 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。 |
| 4. | 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”。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | A 500 - reindeer power jet turbine engine
有500驯鹿力的喷气发动机引擎 |
