The Instrument Rating gives the ability to control the aircraft without reference to the ground or horizon, using flight and navigation instruments.
仪表等级赋予飞行员控制飞机的能力，而不用参考地面或地平线，只使用飞行和导航仪表。
Conclusion: It is feasible to develop and produce geotextiles weaving machinery in Lanzhou Flight Control Instrument Factory and will have a good economical and social benefit.
通过本文的可行性研究认为：在兰州飞控仪器总厂土工布编织机械项目不仅在技术上是可行的，而且具有良好的经济效益和社会效益。
Conclusion: It is feasible to develop and produce geotextiles weaving machinery in Lanzhou Flight Control Instrument Factory and will have a good economical and social benefit.
通过本文的可行性研究认为：在兰州飞控仪器总厂土工布编织机械项目不仅在技术上是可行的，而且具有良好的经济效益和社会效益。
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