A proton is an elementary particle of matter.质子是物质的基本粒子。This particle has a very small mass.这种粒子的质量很小.The technique requires the coupling of a particle accelerator and a mass spectrometer.这种技术要求将粒子加速器和质谱仪连接起来。...
In each cycle of operation the particle picks up energy from the oscillating eletric field.粒子每运转一周都从振荡电场获取新的能量.The ferrography is a wear diagnosis technology based on the analysis of wear particle.笔者利用铁谱技术作为一种监测手段,通过磨粒分析...