“Great Lakes Water Quality Agreement between the United States and Canada”的概念、定义、翻译、参考文献-科学参考

单词	Great Lakes Water Quality Agreement between the United States and Canada
释义	Great Lakes Water Quality Agreement between the United States and Canada Encyclopedia 历史学加拿大历史释 Great Lakes Water Quality Agreement between the United States and Canada《美加大湖水质协定》 1972年加拿大总理P.E.特鲁多和美国总统R.M.尼克松签署的关于共同治理五大湖水质的协定。
随便看	principal submodule principal subspace principal surface principal symbol principal symbol sequence principal system principal tangent principal tangent bundle principal telescope principal term principal theorem principal trace principal translation principal two-sided ideal principal type principal ultrafilter principal uniformization principal uniformizing function principal unknowns principal value principal value integral principal vanishing point principal variable principal vector principal vertex

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