It can analyze traceparticle or vapor samples, so the operator can decide which collection method to use.
它还能分析追踪颗粒或气体样品，因而操作员可以决定使用哪种收集方法。
2
Then how USM works and how the ellipse trace of particle on the surface of stator forms are analyzed.
接着分析了超声波电动机的工作原理和定子表面质点椭圆运动的形成机理。
3
The relation between the displacement of closing up to punch and strain for each metal particle in deformation region had shown by following the deformation trace of particle.