The state equation of Pieoelectric beam is deduced directly from a piezoelectric physical equation in terms of a plane stress problem.

按平面应力问题，直接从压电物理方程出发，导出了压电梁的状态方程。

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Heat transfer equation is a kind of basic mathematical-physical equation. The thermal diffusivity is an important thermal physical parameter for soil.

传热方程是一类常见的基本数学物理方程，热导率是土体重要的热物理参数。

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The equation is different from other conclusions inferring and quoting curved beam differential physical equation(with same fundamental assumptions) in the correlative literatures.

该方程与相关文献中推导和引用的曲梁微分物理方程（基本假定相同）结论不同。

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We are committed to sharing intimacy, to being friends forever but physical attraction is not part of the equation here.

我们亲密无间，一生一世,有没有激情体验无关痛痒。

耶鲁公开课 - 心理学导论课程节选

By the way, if we go back to this, another big part of disease--chronic disease that's related to diet, is the physical activity part of the equation.

顺便一说 我们回过去看,大多数疾病,与饮食有关的慢性疾病,与一个关于肢体运动的方程式有关

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Scott Proefrock, an assistant general manager of the Phillies, explains that physical performance is only part of the equation.

FORBES: Staffing Lessons From the Major Leagues

Physical demand for the yellow metal adds another bullish force to the equation.

FORBES: Two-Faced Gold: Trying To Move From Risk Asset To Safe Haven

The scientists used a mathematical equation to prove that the sound arose from imploding bubbles rather than physical contact between the claws.

BBC: Shrimp, bubble and pop