Iron as an element is a solid. That's it's most stable state at room temperature and pressure, right, and so on. And then we can figure out heats of formation.

铁单质是固态，这是他在室温和常压下，最稳定的状态，然后我们，可以算出生成热，现在这个。

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It is proved by fractal theory that the welded state of every micro zone at welded surface is uneven in the formation process of isothermal superplastic solid-state welding joint.

这也从分形理论的角度证明了在超塑性固相焊接头的形成过程中，焊接面各微区的焊合状态是非均匀性的。

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On the other side, it laid the solid foundation for the formation of the modern western nation state, which promoted the national church and advocated the realization of the national state actively.

另一方面，它对民族教会的积极推动和对民族国家意识的积极倡导，为近代西方民族国家的形成奠定了坚实的基础。

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