组装线备件技术规格制定，采购以及安全库存维护。

Spare parts define, purchase and safety stock maintain.

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为了维护网络安全各种技术被提出。

To maintain the network security, various kinds of technology are proposed.

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为了维护网络安全各种技术被提出。

To maintain the network security, various kinds of technology are proposed.

youdao