some important formulae in trigonometry 在三角学中一些重要公式
In this paper, a set of important formulae for burnup determination of fuel element from HFETR are deduced and researched, and main formulae of ASTM E244 are reformed.
本文推导和研究了适用于高通量工程试验堆燃料元件燃耗测定的重要公式，并将ASTM E244的公式作了重要修改。
The article deduces emf from varying magnetic field and motional emf in a general case further researches induced electric field and presents two important formulae of induced electric field.
本文推导出在一般情况下的感生电动势和动生电动势公式，并在此基础上，对感生电场进行了进一步的研究，给出了求解感生电场的两个重要公式。
It is extremely important that these formulae are safe and properly labeled.
确保这类配方奶粉的安全并加贴适当的标签极为重要。
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