预清洗系统包括清除金属屑及焊渣，它们是磷化和电泳槽内的污染物的来源。

Pre-cleaning should include the removal of metal filings and weld splatter: both are potential sources for dirt in phosphate and electrocoat.

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第二部分：校正的预平衡区带毛细管电泳(modified pre -eq CZE)新方法的建立及应用。

Second part: Establishment and application of modified pre-equilibrium capillary zone electrophoresis (modified pre-eq CZE).

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第二部分：校正的预平衡区带毛细管电泳(modified pre -eq CZE)新方法的建立及应用。

Second part: Establishment and application of modified pre-equilibrium capillary zone electrophoresis (modified pre-eq CZE).

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