尽管通常的价键理论可加以扩展以适用于这些化合物，但仍然有许多棘手的问题有待解决。
Although the usual bonding theories can BE extended to accommodate these compounds, they still provide stimulating problems to BE resolved.
本文根据价键理论导出了一个有机化合物的分子总通式。
Based on the valence bond theory, a general molecular formula for organic com - pounds is derived.
价键理论根据鞣剂与胶原活性基团形成配位键的强弱，解释各种无机鞣剂鞣革性能的差异。
The bonding theory explains the difference of hydrothermal stability of leathers tanned by various mineral-tanning agents according to their bond strength to collagen.
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