这是一个信息时代，是半导体物理，固体物理所支撑起来的，而它们是量子力学所决定的。
This information age, of course, came about because of semiconductors and solid-state physics, which were enabled by quantum mechanics.
本文用对称分析方法，分析计算了力学、电学、固体物理学、原子和分子光谱学中的转动惯量、极化率、选择定则等。
In this paper, the symmetry analysis method is used to compute and analyse the rotation inertia, polarizability, selection rule in mechanics, electricity, atomic and molecular spectroscopy.
物理学、化学、数学，以及这些学科扩展出的物质科学、固体物理、流体力学、热力学和系统分析等等学科是工程学的重要基础。
Engineering is based principally on physics, chemistry, and mathematics and their extensions into materials science, soild and fluid mechanics, thermodynamics, and systems analysis.
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