以下为句子列表：
英文: Based on the existing document, this paper introduces airborne radar of two famous Russian companies having cooperation with India, including advanced passive phased array radar Kobyo, Zhuk, Barsin the world.
中文: 摘要介绍了与印度在机载雷达领域进行军技合作的俄罗斯两家知名科研公司的机载雷达产品，其中包括达到国际先进水平的无源相控阵雷达“标枪”、“甲虫”、“雪豹”等，同时阐述了几种雷达的主要性能指标。
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英文: Testing in lab and on-site proved that the ultrasonic phased array system was stable and reliable, and was high value in use.
中文: 实验模拟和现场测试证明，该系统稳定可靠，有很高的实用价值。
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英文: The linear and densely spreading phased array was used, and the probe parameters were optimized by calculation.
中文: 系统选用线阵密排式相控阵探头，通过计算优化了探头参数。
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英文: The ultrasonic phased array system for monitoring the expanding of weld defect in steel bridge was researched.
中文: 摘要研制了针对钢结构桥梁焊缝缺陷扩展的超声相控阵监测系统。
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英文: This paper proposes principle and method of optimizing energy and time distribution in elevation to obtain good performance in the frame time, and this method has been used in engineering project of several phased array radars.
中文: 文中提出了仰角扫描能量时间的优化分配原则和方法，使雷达的能量和时间在帧时间内分配达到性能最佳，这种方法已在多部相控阵雷达设计中采用。
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