电磁频率较高的特种线路板,一般来说,高频可定义为频率在1GHz以上。其各项物理性能、精度、技术参数要求非常高,常用于汽车防碰撞系统、卫星系统、无线电系统等领域。价格高昂,通常每平方厘米价格在1.8左右,约合每平米1.8万元。
...保个人负担多少一般来说,我司在PCB制作时用的板材主要有FR4,玻纤布环氧CCL;CEM-3,复合基CCL;高频板(High Frequency Board)及铝基板,至于选材最主要的还是按客户要求。
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雷达组件板是多品种器件表面混装的单面高频板。
The Radar package board is an one-sided, high frequency board, which is mixed rags with multiple kinds of surface mounting components.
最后,经过七天的竞价,诺沃辛卖出了四件零件,包括以500美元的售价卖出一个雷达调节器和以32美元卖出一个高频无线电电路板。
During a seven-day auction on eBay that ended on May 29, Novocin says he sold four items, including an X-Band Weather Radar Modulator for and a high-frequency radio circuit card for .
结果术前高频超声提示正确率为81。 6% (31 /38),其中包括半月板损伤18例、关节内游离体7例及滑膜病变6例。
Results The diagnostic accuracy of high frequency ultrasound was 81.6% (31/38), including 18 cases of meniscal tear, 7 cases of loose body and 6 cases of synovial lesions.
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