All - dielectric multi - cavity filter : high transmittance of the peak, well - rectangularity, deep cut - off spectrum .
全介质 多腔 滤光片,峰值透过率高, 矩形化好, 截止深.
互联网
The key issue in large tower device fabrication is to guarantee the linearity, rectangularity and parallel.
如何保证超长容器的“三度”,即直线度 、 垂直度和平行度,是制造大型塔器的关键问题.
互联网