The single frequency network (SFN) is the key technology in very high frequency (VHF) channel transmission of automatic hydrological forecast systems.
单频组网是水情自动测报系统中采用特高频信道传输的关键技术。
This analytic method is also suitable for the bands of extremely low frequency (ELF) and very high frequency (VHF).
这种分析方法也适用于极低频到甚高频波段。
Microcrystalline silicon thin films prepared at different deposition parameters using very high frequency plasma enhanced chemical vapor deposition (VHF-PECVD).
采用甚高频等离子体增强化学气相沉积技术制备了不同衬底温度的微晶硅薄膜。
Microcrystalline silicon thin films prepared at different deposition parameters using very high frequency plasma enhanced chemical vapor deposition (VHF-PECVD).
采用甚高频等离子体增强化学气相沉积技术制备了不同衬底温度的微晶硅薄膜。
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