单词：effective range
[化] 有效测量范围; 有效距离
effective range的用法和样例：
例句
- The quantum noise is a basic noise in the atmospheric laser communication system, which restricts the effective distance of communication.摘要量子噪声是通信系统中的基本噪声，它的存在制约了通信的有效距离。
- Once the user enters the sensor's effective range and then steps away, the Flushometer Solenoid initiates the flushing cycle to flush the fixture.一旦使用者进入感应器的感应有效范围后离开，冲水阀螺线管就启动一次冲水冲刷卫生洁具。
- At this range, the enemy is too far away for standard rounds to be effective.这个距离远远超过了子弹的有效射程。
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