effective range

基本解释

ADS-B can decrease the number of active interrogations required by ACAS, thus increasing effective range in high density airspace.
ADS-B可以减少由ACAS（机载避撞系统）所要求频繁的探询次数从而在高密度航空区域增加有效范围。
It increases the effective range and maneuverability via a larger dual-thrust rocket motor and independent control actuator system.
通过更大的双推力火箭发动机和独立的控制激励系统，具有了更大的有效作战半径和机动能力。
www.etiri.com.cn
Since batteries can be recharged only slowly (the process takes hours, not minutes), a car’s effective range is limited by the size of its battery. And batteries are expensive.
由于电池充电缓慢（这一过程耗时数小时，而不是几分钟），因此汽车的有效行驶里程取决于电池的容量，而电池是很昂贵的。

He argues that compared with, say, South Korea, Brazil went into recession equipped with an effective range of anti-poverty schemes.
ECONOMIST: Defeats and victories in Brazil’s war on poverty The
Britain has also helped with air-to-air refuelling, thus extending the effective range of America's carrier-based bombers, and agreed to the use of Diego Garcia, a British island in the Indian Ocean, as a base for heavy bombers.
ECONOMIST: The war in Afghanistan