We're increasingly aware of the fact that we can't control Earth systems with engineering alone, and realizing that we need to moderate our actions if we hope to live in balance.
What has changed are technological advances in aircraft engineering and controlsystems.
飞机工程和控制系统的技术进步使情况发生了改变。
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Northrop Grumman is responsible for systemsengineering, system integration, the beam control subsystem, the power subsystem, the thermal subsystem and C3I.