Achieving low crosstalk and high coredensity is one of the key challenges for multicore fibre.
在多模光纤中，实现低串扰高密度是一个大的挑战。
2
POWER7 provides increased processor coredensity per chip or socket, improved multithreading support, and improved core memory bandwidth (discussed below).
POWER 7在每一个芯片或插槽上增加了处理器内核密度，改进了多线程支持，并且改进了内核内存带宽(下面介绍)。
3
A titanic impact could have stripped away a portion of its rocky mantle, leaving behind a metallic core whose density is out of proportion with the original ratio of rock to metal.