principal point

基本解释

The principal point of contact at the client (C), who also understands some of the strategic potential, but is similarly denied visibility.
客户那边的主要联系人（C），也了解一些战略潜能，但类似地被拒绝可见。
One principal point of this art is to suit our behaviour to the three several degrees of men; our superiors,our equals, and those below us.
这门艺术的一个原则上的关键就是让自己的行为与三种不同层次的人相称：地位高于我们的，地位相等的和地位低于我们的。
According to image of linear edges in calibration object, the distortion coefficient and position of principal point of imaging system can be calculated by optimization method.
利用标定物直线边缘的图像，并运用优化的方法来计算成像系统的畸变系数和主点位置。

By the same token, Russia's evident interest in maintaining multiple-warhead land-based missiles threatens to make a mockery of the START II agreement -- whose principal selling point was that it would de-MIRV the former Soviet ICBM force -- while creating new, and strategically significant, cheating opportunities for future agreements ostensibly promising still lower levels of nuclear weaponry.
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At some point the principal amortization is greater than the depreciation.
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