The occurrence of aviation accidents mirrors the defects in the aviation system.

航空事故的发生是航空系统存在缺陷的反映。

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As an important part of a civil aviation system, a civil aviation airport provides the basic conditions for civil aviation safety.

民航机场是民用航空系统的重要组成部分，是航空安全的基本保障。

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Avionics computer has complex function, and includes kinds of interface and aviation communicating bus. It's the core of aviation system.

航空电子计算机功能复杂，具有多种接口和航空通信总线，是航空系统的核心部件。

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His latest statement focused on the need to correct flaws in the aviation security system that allowed the would-be bomber to board the Detroit-bound flight in the first place.

VOA: standard.2009.12.29

Prior to the 2000--01 recession and Sept. 11 our civil aviation system was speeding toward paralysis.

FORBES: Magazine Article

"The deadline was necessary to ensure the security of our aviation system, and it still is, " he said.

CNN: House panel tackles homeland security bill

The fact is that business aircraft operators already pay taxes to support the aviation system, every time they buy fuel.

FORBES: House Commitee Chairman Says A New Aviation User Fee Is Asking Too Much