They consist of concentric shells of graphite, with each shell rolled into a cylinder so the lattice of carbon atoms remains continuous.
它们由石墨的同心外壳组成，每个壳圈成圆柱，所以碳。
The scattering form functions of the single shell and double concentric shells insonified by a normally and obliquely incident plane wave are calculated.
并分别计算了平面波正横和斜入射单层和双层无限长圆柱壳体的远场散射形态函数。
Double concentric cylindrical shell with solid floor and added longitudinals on the pressure tank shell is a very good structural form of new pressure tank.
指出了液舱壳板加纵骨的全实肋板同心双层圆柱壳是一种优良的耐压液舱新型结构型式。
The sound radiation of a submerged finite double shell (two concentric cylindrical shells with the entrained fluid) is studied.
对双层壳体（壳间充满流体的同轴圆柱壳）的声辐射进行了研究。
The sound radiation of a submerged finite double shell (two concentric cylindrical shells with the entrained fluid) is studied.
对双层壳体（壳间充满流体的同轴圆柱壳）的声辐射进行了研究。
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