EPR

例句：

1. 1. The EPR signal was strong enough to detect the presence of a nearby radioactive source.
   电子脉冲响应信号足够强，能够检测到附近放射性源的存在。
2. 2. The EPR experiment is used to study the behavior of electrons in materials.
   电子脉冲响应实验用于研究材料中电子的行为。
3. 3. The EPR technique has been widely used in physics and chemistry research.
   电子脉冲响应技术在物理学和化学研究中得到了广泛应用。