operating frequency range造句

• Operating frequency range
  工作频率范围
• First several kinds of implementation of si - micromachined transmission line have been investigated . with different fabricating process , each transmission line has its different structure , and the insertion loss and operating frequency range are different . then we determined our objective
  在大量文献调研的基础上，对硅衬底上制备微波传输线的方法进行了全面分析和总结，结合现有仪器设备和加工技术条件，确定研究目标。