single step process造句

• This is a single step process and comparatively cheaper and faster than lithography . the laser direct writing system with polar coordinate and cartesian coordinate is described in this paper
  激光直写系统要求的器件的精度非常高，我们目前的工作目标是首先实现激光直写系统的基本功能，在此基础上，再进行高性能系统的研制。