它们被称为“虚粒子”(virtual particle)，以便与实粒子(real particle)区分隔来，而实粒子则不会以这种体例受到制约，而且其存在可得以测定。
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real-time ultrasonic particle monitor 实时超声波杂质监测仪
real-time particle filter 和实时粒子滤波
real inter-particle collision 颗粒间真实碰撞
Real-time single particle trac 基于虚拟仪器的实时单微粒跟踪系统设计
Cherenkov radiation is predicted by the "standard model" of particle physics and is also observed in the real world, most often as a faint blue glow emanating from the cores of nuclear reactors.
切伦科夫辐射是用粒子物理学的“标准模型”所预测到的，在现实世界中也观察到了，最经常是从核反应堆的核心处所发射的淡蓝色光芒。
This paper presents a real time cartoon smoke simulation algorithm based on fluid dynamics and particle system.
提出一种流体力学模型结合粒子系统的卡通烟雾实时模拟算法。
Particle System is widely used to describe a model with some simple graphics. High performance Particle System can simulate the real time scene.
粒子系统就是用大量的简单图元来表示某个物体，高性能的粒子系统可以真实地模拟出一些虚拟场景。
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