以及对称和非对称量子阱中面声子的色散曲线。
The polarization eigcnfrequencies of symmetric and unsymmetric quantum well are given.
阐述了高速与重载铁路钢轨不同曲线轨头非对称打磨技术的原理及应用。
The different rail curve asymmetrical grinding was introduced for high-speed and heavy-haul rail.
针时非对称球面五杆机构，研究了机构的奇异轨迹曲线和灵巧度。
The singularity loci and dexterity of two degrees of freedom asymmetric spherical five-bar mechanisms are investigated.
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