由于爆区范围内存在较强的电场和磁场，采用了非电起爆技术，避免了杂散电流的影响，保证了爆破作业的安全。
Because the electric and magnetic fields exist within the blasting area, the nonelectric initiation technology was used to avoid the effect of stray current, ensuring the safety of blasting operation.
大电流互感器通常工作于强杂散磁场环境，必须采取有效措施来保护其不受外界电磁干扰。
Large current transformers usually work in the environment of strong stray flux, so some effective methods must be taken to shield them from electromagnetic interference.
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