The phase mismatch error is the main error source of sound intensity measurement system. It is difficult to eliminate this error only by upgrading the accuracy of instrument.
相位失配误差是声强测量系统的主要误差源，仅靠提高仪器的精度很难消除这一误差。
This section defines a number of terms related to instrument accuracy.
本节给出了有关仪器准确度的若干术语的定义。
Responsible for site instrument management, including procedure establishing, calibration management, to ensure its accuracy and compliance with regulation of local and corporation.
负责工厂的仪表校正管理，包括制定相关程序，日常校验管理，确保其精确度并符合国家和公司的规定。
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