Building the reusable program components library is one of the efficient methods to overcome software crisis and improve the productive efficiency of software.

建立可重用程序部件库是克服“软件危机”，提高软件生产效率的有效途径之一。

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This paper presents two methods of improving the reliability of ADA reusable program components : fault-avoidance and the fault-tolerance.

主要从避错方法和容错技术两方面入手，详细阐述了提高ADA可重用程序部件可靠性的方法。

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The company said it intends to begin precursor flights later this year, flying an unpiloted reusable craft up to 22 miles (36 km) in a beta testing program.

MSN: Suborbital spaceships spark scientific frenzy