OPS still is placed in to study the stage because of lacking of the high-speed optical logic device and optical buffer.
光分组交换由于缺乏高速光逻辑器件、光缓冲存储器等，因此还处于研究阶段。
3
Without opening mould, it can provide accurate buffer, highspeed gap filling and high strength of supporting and positioning for different volume, switch and weight products.