短語詞組短語zero space vector 零空間矢量zero voltage vector 零矢量zero tree vector 零樹矢量level zero interrupt vector 零級(jí)中斷向量zero voltage vector distributon 零矢量分布a zero voltage vector 零電壓矢量zero vector interval 零矢量時(shí)間middle value zero vector 中間值零矢量 返回 zero vector