TEWKSBURY, Mass. | The U. S. Navy has awarded Raytheon Company (NYSE: RTN) two contracts that extend the company's legacy of performance and support for the Aegis weapons system.
美国海军已授予雷神公司两项合同，以提高宙斯盾雷达系统性能并为宙斯盾武器系统提供支持。
Contrast and analyze single lumped mass and two lumped mass, conclude main factors which affect valve system.
对比分析了单质量模型和二质量模型，归纳了影响配气系统的主要因素。
The operation process of the closed variable mass energy transformation and storage (VMETS) system composes of two processes namely the charge process and the discharge process.
变质量能量转换及储存系统运行过程由充能和释能两个过程组成。
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