A symplectic integrator is viewed as promise of being a valuable tool in the numerical exploration of planetary and satellite n-body systems in the solar system dynamics.
在太阳系动力学中，辛积分器已成为研究哈密顿系统的长期定性演化的最佳工具。
He said the U. N. Security Council sanctions, approved in June, make clear that the application international law with regard to Iran is not an empty promise.
他说，联合国安理会在六月份批准的对伊朗的制裁，表明对伊朗实施国际法律并不是一席空谈。
He said the U. N. Security Council sanctions, approved in June, make clear that the application international law with regard to Iran is not an empty promise.
他说，联合国安理会在六月份批准的对伊朗的制裁，表明对伊朗实施国际法律并不是一席空谈。
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