在计划经济时期为保证原油生产，不计费用；
To ensure the produce in the period of planned economy, the cost is not calculated.
在计划经济时期，实际履行原则扮演着重要的角色。
The principle of specific performance played a important role in the era of planned economy.
在计划经济时期，集生产区和居住区为一体的单位社区适应形势的需要被打造出来。
During the planned economy period, a set of production areas and residential units as a whole community, which is built to meet the need of country construction.
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