Highlights
The Little Jet Engines That Can
Harry T. Roman
Science & Nature
Jet Engines, Fuel Burner, Microturbines, Engineers, Compressor, Turbine, Exhaust, Airplanes
HL
507
B2
English
9781683297574
Someday, small jet engines called microturbines may heat skyscrapers, homes, and even laptop computers.
Word lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Coverage |
|---|---|---|
| Eiken Grade 1 | 3,105 | 0.06% |
| Eiken Grade 2 | 866 | 0.58% |
| Eiken Grade 3 | 900 | 6.22% |
| Eiken Grade 4 | 600 | 10.33% |
| Eiken Grade 5 | 600 | 12.67% |
| Eiken Grade Pre1 | 2,868 | 0.1% |
| Eiken Grade Pre2 | 1,327 | 0.9% |
| Eiken Grade Pre2+ | 1,562 | 1.22% |
| NDL | 875 | 14.06% |
| NGSL 1 to 1,000 | 1,000 | 12.7% |
| NGSL 1,001 to 2,000 | 1,000 | 2.6% |
| NGSL 2,001 to 3,000 | 801 | 1.12% |
| NGSL Supplemental | 52 | 7.69% |
Grammar lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Unique | Coverage | Unique |
|---|---|---|---|---|
| Eiken Grade Pre1 | 94 | 94 | 0% | 0% |
| Eiken Grade 2 | 123 | 122 | 0% | 0% |
| Eiken Grade Pre2 | 111 | 108 | 0% | 0% |
| Eiken Grade 3 | 48 | 47 | 0% | 0% |
| Eiken Grade 4 | 52 | 49 | 0% | 0% |
| Eiken Grade 5 | 176 | 139 | 0% | 0% |
| A1 | 352 | 316 | 0% | 0% |
| A2 | 949 | 893 | 0% | 0% |
| B1 | 1,126 | 1,106 | 0% | 0% |
| B2 | 775 | 760 | 0% | 0% |
| C1 | 402 | 395 | 0% | 0% |
| C2 | 312 | 308 | 0% | 0% |