一件事实上不是任何人的错：2009年发生在一架长期废弃的俄罗斯军用航天器和一颗铱星商用通讯卫星之间的一次随机碰撞。
One wasn't really anyone's fault: a random collision in 2009 between a long-defunct Russian military spacecraft and an Iridium commercial communications satellite.
例如，如果一个模型没有规定一种特定的中间件技术的选择，那这个模型对于通讯中间件来说就是一个PIM。
For example, a model may be a PIM with respect to choice of communication middleware if that model does not prescribe a particular choice of middleware technology.
这不是一件小事；短距离无线保真频率是无牌普，曾经被认为是“垃圾频率”，短距离无线通讯充满了从微波炉和婴儿监视器里收集到杂乱的低强度信号。
This is no small thing; the standard for Wi-Fi was developed on unlicensed spectrum that had been considered "junk band", cluttered with low-intensity signals from microwave ovens and baby monitors.
应用推荐