区域产业结构平衡是暂时的、非稳态的。
The balance of regional industrial structure is temporary and unstable.
浅埋工程围护结构传热是一个非常复杂的非稳态传热。
Heat transfer of shallow buried underground engineering is a very complicated transient one.
浅埋工程围护结构传热是一个非常复杂的非稳态传热。
Heat transfer of shallow buried underground engineering is a very complicated transient one.
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