Sampling methods used in operation should not negatively impact cleanliness level in the zone.
动态取样应当避免对洁净区造成不良影响。
The FIA zone sampling flow system is adopted.
该装置采用流动注射分析区域采样流路系统。
The precision of this method is better than the zone sampling method. The relative standard deviation (RSD) is less than 3 %.
方法的精密度优于区域采样法，相对标准偏差小于3%。
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