The Einstein summation convention dispenses with writing summation signs, leaving the summation implicit.

爱因斯坦求和约定省去了书写求和符号的步骤，使得求和是隐式的。

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The summation of forces in this and that directions must be zero.

在这个和那个方向上的合力必定为零。

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The summation of all percentages payable in respect to any one accident shall not exceed 100%.

在任何一个意外上，应理赔的百分率总和不应超过100%。

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with someone else who's standing next to you, you're going to sum your numbers together and one of you whoever is fastest probably is going to sit down and the other person is going to take on his or her number, the summation of those numbers; and then you're going to repeat and if you follow the logic here in just a few moments, there should be just one of you very awkwardly standing.

你们需要与站在你下面一个的你结成一对,把你们的数字相加,你们中最快的那个可以坐下,其他人将接着他的那个号码继续进行，计算这些数字的和，以此重复,如果你们遵循了这一逻辑，最后将只有一个人呆呆地站着。

哈佛公开课 - 计算机科学课程节选

If you have a sample with n observations, it's the summation I = 1 to n of xi/n--that's the average.

如果你有n个观测值,对Xi从i=1到n求和再除以n

耶鲁公开课 - 金融市场课程节选

When we have n observations it's just the summation i = 1 to n of 2/n.

当有n个观察值,这就是在i取1到n时,x减去x均值的平方,除以n的累加

耶鲁公开课 - 金融市场课程节选

My theory is that the closes over a nine-year period are the summation of all bullish and bearish events for that market or specific stock.

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Defense attorney Roger Rosen, who often acted as lead defense attorney after Cutler's early woes, will give the non-scientific portion of the summation, with forensic scientist Linda Kenney-Baden offering the address on the forensic evidence.

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At the time, Cutler said he read transcripts of the trial and spoke daily to Spector and would still be prepared to deliver the part of the part of the defense summation that did not deal with forensics.

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