选择PCB板材必须在满足设计需求和可量产性及成本中间取得平衡点。

Select the PCB board must meet the design requirements and production and cost the middle point of balance.

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2008年国家可再生能源实验室对120家加油站进行的一项调查表明，添置一只新储罐的成本中间值是XXXX万美元。

An NREL 2008 survey of 120 stations found that the median cost to add a new tank was XXXX.

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高速公路就是这样一种中间产品，它只有在付出相当成本后才能区分使用者，因此是需要尽量避免的。

Highways are an intermediate case where exclusion is possible only at a significant cost, and thus should be avoided if possible.

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