From objective factors and subject factors, this paper analyzes the factors influencing the retrieval efficiency of network information, and advances some improving countermeasures.

从客体因素与主体因素两个方面，对网络信息检索效率的影响因素进行了分析，并提出了相应的改善对策。

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This paper makes the strength check of gearbox's middle axle key, and advances the improving countermeasures for its quality problems such as running-off-key and key damaging of the middle axle.

对变速箱中间轴键的强度进行了校核，提出了对中间轴脱键及键损坏等质量问题的改进措施。

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And for various reasons put forward sound legislation, improving quality and strengthening enforcement enterprise production Guide and raise public awareness of countermeasures.

并针对各原因提出了完善立法、提高执法质量、加强企业生产引导以及提高公众环保意识的对策。

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"This work has many real-world applications including seabed exploration, detecting leaks in oil pipelines, mine countermeasures, and improving the performance of underwater vehicles, " he said.

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