偏高的主要原因在于辐射屏蔽设计有误，个别加速器房存在防护过度的问题。
The main reason resulted in high radiation levels is faulty design for the radiation shielding. At the same time, individual cases appeared over protection against the radiation are also indi…
结论PV C改性塑料可有效屏蔽锅炉房噪声。
Conclusion the modified PVC sound insulator could effectively screen the noise from the boiler room.
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