具体表现为取象比类与推演系联这两种基本方法。
Imitating objects to compare species and reasoning of species to link their similarities are the two basic means of it.
第二部分对钢结构结构体系进行了归纳与推演，用简单的结构单元模拟了复杂结构体系的生成。
The second part concentrates on the structure system, and demonstrates how the complicated system is generated with simple structure unit.
气温变化周期是根据氧同位素测定的大量远古温度记录而推演出来的。 气温变化周期与人类演化进程的对照，暗示“黄金时期”与气候急剧波动而短暂的时期相对应。
What marked out this period was a greater range of recorded temperatures, suggesting it was a time of rapid but short-lived fluctuations in climate.
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