Sentron
防阴极回轰式磁控管(短波电子管), 防阴极反加热式磁控管A-type sentron A型仙台放电管
🗣️ 情景例句
Did you find one?
找到合适的吗？
News is like fish.
新闻就像鱼，过后不新鲜。
Education in the wilderness is not a matter of monetary means.
荒凉地区的教育不是钱的问题，