The microkernel approach, taken by Mach, was not a great success.
Mach所使用的微内核的方法，并没有获得很大的成功。
Mach territory in Africa is desert.
非洲有不少土地是沙漠。
A class of compressible flow Mach number limit.
一类可压缩流的马赫数极限。
The cruising speed of this new type of fighter is Mach two.
这种新型战斗机的巡航速度为声速的两倍。
The aim is to fly at about Mach 2, twice the speed of sound.
目标是以大约2马赫的速度飞行，也就是音速的两倍。
The aim is to fly at about Mach 2, twice the speed of sound.
目标是以大约2马赫的速度飞行，也就是音速的两倍。
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