So now that means if this is where the center of positive excess charge lies and on top of it is the center there is no displacement of the charge so there is no net dipole.

所以现在我们说,如果正电荷中心,就位于,那么还是在这里负电荷中心也在这里,所以没有空间偶极。

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Where is the center of the excess positive charge?

那键的正电荷中心呢？

麻省理工公开课 - 固态化学导论课程节选

And, for the latest 12-month period, we required both positive earnings and positive excess cash flow.

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In summary, I believe that these recent price increases are more attributable to the excess liquidity in the financial system than a sudden positive shift in global economic fundamentals.

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And the trend remains very positive -- 2.1 million private sector jobs -- in excess of 2.1 million private sector jobs created over 15 months, and sustained economic growth for seven months -- seven quarters, rather.

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