"We did our fuel efficiency test and a bunch of other tests on that car," Fisher says.
“我们对那辆车进行了燃油效率测试以及一系列的其他测试，”费希尔说。
2
It was the fourth test of the weapon, which can carry conventional or nuclear payloads of 1.5 tons and USES solid fuel.
这是该武器的第四次试射，它可以携带1.5吨常规或核的有效载荷，并使用固体燃料。
3
The longest previous hypersonic scramjet flight test, performed by a NASA X-43 in 2004, was faster, but lasted only about 10 seconds and used less logistically supportable hydrogen fuel.