这些是大量晶体，或球原始粒子的疏松团粒。
These are loose aggregates of a large number of primary particles of crystalline or spherical shape.
而在他身后的就是现在进行的工作：一台28英尺高的世界上第一台粒子加速器的再造品，而其中的一些零件还是利用的在曼哈顿计划中的原始硬件。
Looming behind him is his latest work in progress, a 28-foot-high re-creation of the world's first particle accelerator, surrounded by some of the original hardware from the Manhattan Project.
阐述了用单分散超微粒子作为原始粉料制备精细陶瓷所带来的重大影响及其作用。
The paper reveals the important effect of fabricating the fine ceramic by using monodispersed ultramicro particles as starting materials.
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