这个表是什么意思？能否详细说明下！！！...

Ethernet MaxBand300 1500/500 MHz.km MaxBand150700/500 MHz.km 50/125um500/1000 MHz.km 62.5/125um 200/600 MHz.km 62.5/125um 160/500 MHz.km 10GbE 850nm serial Laser 300 150 86 35 28 10GbE 1300nm WWDM Laser 300 300 300 300 300 1GbE 850nm serial Laser 600 600 750* 400* > 220* 1GbE 1300nm serial Laser 550 550 2000* 1000* > 550* 100MbE 850nm serial LED 300 300 300 300 300 100MbE 1300nm serial LED 2000 2000 2000 2000 2000 10MbE 850nm LED 1250 1250 1250 2000 2000