Discuss the considerable problems when using "back calculation method".

并讨论运用反算法时应考虑的问题。

youdao

The a value and correlative length coefficient by back calculation are obtained in this paper.

同时给出了在此种条件下的阈值刚度和柱子的计算长度系数的表达形式。

youdao

Based on theory of inertial point, a new assessment method of back calculation of modulus is put forward with the assessment criterion provided.

基于惰性点理论，提出了一种新的模量反算判别方法，并给出了判别标准。

youdao

"Just a back-of-the-envelope calculation shows that in the Philippines, if we in a year can be reaching just five thousand farmers and their fields can be increasing the yield by half a ton per hectare, we could be looking at profitabilities for those farmers in the range of half a million dollars."

VOA: standard.2010.07.28

He goes back and redoes the calculation, only in this case he says what I am going to do is I am going to redo the calculation for helium, but I am going to consider not just the mass of the electron but the reduced mass of the system.

他回去重新做了计算，仅在这种情况下他才会说说我将要,为氦重做计算，但我认为,不只是电子的质量,还有系统质量的减少量。

麻省理工公开课 - 固态化学导论课程节选

So let's do a sample calculation now using this Rydberg formula, and we'll switch back to emission, and the reason that we'll do that is because it would be nice to actually approve what we just saw here and calculate the frequency of one of our lines in the wavelength of one of the lines we saw.

让我们用Rydberg公式,做一个例题，我们回到发射上,这么做是因为这样,可以用我们看到的波长,来验证我们计算的频率。

麻省理工公开课 - 化学原理课程节选

Or you unveil an innovative executive training programmed and boardroom colleagues question its net present value and pay-back time calculation.

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Messy, back of the envelope calculation: Assume that there were 200 patients in the active group at 24 weeks and 150 patients at 52, and 250 patients were on placebo at 24 weeks and 200 at 52, and you get something like 9 cases of valvulopathy on lorcaserin and 6 on placebo.

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The most striking feature of the opposition to sending Elian back is its combination of political calculation and popular religiosity.

ECONOMIST: The tragedy of Elian