我的仿真在運(yùn)行的時(shí)候總是提示
ERROR -- Node GND_SIGNAL is floating
ERROR -- Node N00308 is floating
ERROR -- Node N01613 is floating
ERROR -- Node GND_EARTH is floating
ERROR -- Node N01690 is floating
ERROR -- Node N01529 is floating
ERROR -- Node N01558 is floating
ERROR -- Node N01593 is floating
請(qǐng)問(wèn)是什么原因，怎么改正
