图书馆信息资源数字化是数字图书馆建设的前提和条件。

Library information resource digitization is a premise and condition of the construction of digital library.

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二是其人格力量是“两课”教育真理力量发挥的前提和条件；

Second, it is the prerequisite and condition of developing truth power in "two_subject" teaching.

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因此路径规划是移动机器人能否成功完成任务的重要前提和条件之一。

So path planning is one of the important precondition and condition whether mobile robot can finish the task successfully.

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