Dialectic is not single subjective dialectic and objective dialectic, but dialectic of human 's life activity.

辩证法既不是单纯的主观辩证法，也不是单纯的客观辩证法，而是人的生命活动的辩证法。

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Essentially engineering is a target-oriented activity and process which features the change from subjective human thinking to objective existence.

工程本质上是具有价值取向的主体作用于客体、主观思维物化为客观实体的一种目标导向的活动和过程。

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