To reduce helicopter cabin noise, an active noise control methodology is investigated.
为消减直升机舱室噪声，对有源消声技术进行了研究。
A software methodology is a systematic approach and control of how to develop software.
软件方法是关于如何开发软件的系统性方法和控制。
A software methodology is a systematic approach and control of how to develop software.
软件方法是关于如何开发软件的系统性方法和控制。
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