稀油密封干式煤气柜在安装过程中，基柱的安装精度要求很高。
During the installation of the oil sealed dry type gas tank, the demand of mounting precision for foundation column is very high.
PSA分散固相萃取法与氨基柱固相萃取法相比，操作简单，基体干扰少，结果准确可靠，重复性好。
Compared to NH 2 column solid-phase extraction, PSA dispersive solid-phase extraction was easier to operate with fewer matrix interferences, and achieved better results.
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