区系地理分析表明，永安竹类植物有5个分布区类型(含亚型)。

Floristic analysis indicated that there are 5 distributive types of Bambusoideae in Yong 'an city. (contains a sub-type).

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永安镇三维地震工区位于已勘探开发近20年的复杂断块油田区。

Yonganzhen 3d seismic prospect is the complex fault-block oil field area where exploration and development have lasted nearly 20 years.

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本文以江苏油田永安25区块为例，详细研究了不同油藏参数、操作参数等对原油产量的影响。

Taking Yongan 25 block in Jiangsu oilfield for example, the effects of reservoir parameters and operating parameters on oil production were studied in detail in this paper.

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