Beam cross section and momentum spectra have been measured on the focal plane.

测量了聚焦面上的束流截面和动量谱.

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The shear and bending moment of beam cross - section were calculated by the internal function of Excel.

介绍了平面弯曲梁的剪力与弯矩的数学模型,这是编程计算的基础.

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Studies constitutive relations that RC simple beam cross - section abides by under different stress phases.

研究钢筋混凝土简支梁正截面在各个不同的受力阶段所遵循的本构关系.

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