实际上，这种情况在上世纪70年代发生过。 当时普遍的恐慌性屯货将伊朗石油供应中断带来的效应给加剧放大了。
This actually happened in the late 1970s, when the effects of disrupted Iranian supply were amplified by widespread panic stockpiling.
简要叙述了南屯煤矿将旧铁路装车线改造为自动添加系统，介绍了该系统的原理、构成等。
This paper narrates how Hantun coal mine transforms the old railway load line into automatic loading system and introduces the principle and structure of this system.
软件无线屯的设计思想之一是将A／D转换器尽可能靠近天线，即把A／D从基带移到中频甚至射频，把接收到的模拟信号尽早数字化。
One of the important conceptions of Software Radio is to make A/D converter close to antenna, we should convert IF analog signal even RF analog signal into digital signal.
应用推荐