By making a systematic theory analysis, specifically calculating deduction, an ideal zoom lens which has simple configuration, performance reliability, good image quality has been successfully gained.
经过系统的理论分析，具体的推导计算得到了结构简单、性能可靠、成像质量理想的变焦距物镜。
In this paper, a systematic analysis of reliability and availability is given to the decentralized control systems.
本文的主旨在于探讨计算机分散控制系统可靠性问题。
The reliability problem is essential for computer network, so the systematic research and analysis is needed.
可靠性这个对于计算机网络来说至关重要的问题，更需要我们对其进行系统的研究和分析。
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