At present, there are a large amount of import electronic components used in the internal electronic equipments, thus the progress, cost and reliability of development effort have been always influenced by the purchase of import electronic component.

• 摘要在目前国内的电子装备中，使用了大量的进口电子元器件，因此对进口元器件的采购一直影响著研制工作的进度、成本及可靠性。