傅立叶数(Fourier number, Fo)是无量纲时间(dimensionless time)，对于特定的问题，傅立叶数是一个常数。
傅立叶数(Fourier number, Fo)是无量纲时间(dimensionless time)，对于特定的问题，傅立叶数是一个常数。
傅立叶数(Fourier number, Fo)是无量纲时间(dimensionless time)，对于特定的问题，傅立叶数是一个常数。 A: 正确 B: 错误
傅立叶数(Fourier number, Fo)是无量纲时间(dimensionless time)，对于特定的问题，傅立叶数是一个常数。 A: 正确 B: 错误
Which of the following statements is correct ? (1) There are two types of strains, linear strain(ε) and shearstrain(γ). (2) Strain is dimensionless. (3) If all parts of the object are not deformed, the strain at all points in the body is zero. (4) If the strain of each point is zero, the object has no displacement.
Which of the following statements is correct ? (1) There are two types of strains, linear strain(ε) and shearstrain(γ). (2) Strain is dimensionless. (3) If all parts of the object are not deformed, the strain at all points in the body is zero. (4) If the strain of each point is zero, the object has no displacement.
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