模-数数-模转换器
analog to digitaldigital to analog converter
模数模保密机
analogue-digital-analogue encryption device
模-数-模通信
analog-digit-Analog communication
异步模—数—模语音加密体制
asynchronous analog-digital-analog speech scrambling system
SONOS(硅/二氧化硅/氮化硅/二氧化硅/硅)
polysilicon-oxide-nitride-oxide-silicon(SONOS
γ-2.3环氧丙氧丙基三甲氧基硅硅烷
glycidoxypropyltrimethoxysilane
孢粉、植硅石组合
Pollen and phytolith assemblage