例句與造句

1. The CIA continued studies into even higher performance aircraft, and studied replacing the A-12 under Project Isinglass.
2. Meanwhile, in 1967, the US Air Force funded a study into advanced rocket propulsion systems for use during Project Isinglass, with Rocketdyne asked to investigate XLR-129, which used a two-position expanding nozzle to provide increased efficiency over a wide range of altitudes.
3. The first engine to include an expanding nozzle appears to be the Pratt & Whitney XLR-129 . The XLR-129 was developed in order to power a McDonnell Aircraft boost-glide aircraft design that was entered as part of the Project ISINGLASS ( or RHEINBERRY ) study looking at follow-on designs to replace the Lockheed A-12 that was just entering service.
4. It's difficult to find project isinglass in a sentence. 用project isinglass造句挺難的