nulled

1.没有价值的;无用的

2.【法】无法律效力的

3.【科技】没有

4.【数】相当于数字零的

5.【逻,数】空集的

6.无特点的

1.【数】数字零

2.【计】空位;空白符号

3.【电子】无信号

4.〈比喻〉空虚

1.抵消

2.【法】〈罕〉宣布无效

3.〈罕〉彻底消灭

1.with no value or effect

2.[Law]of no legal or binding force

3.[Sci-Tech]amounting to nothing

4.[Mathematics]having or associated with the value zero

5.[Logic,Mathematics]of a class or set: having no members

6.lacking distinctive qualities, traits, or characteristics

1.[Mathematics]a zero

2.[Computer]a character which produces no effect or action but is used to fill up a space or to separate pieces of information

3.[Electronics]a condition of no signal

4.a state of emptiness, featurelessnes

1.to cancel out or remove (a force, effect, signal, etc)

2.[Law]to annul or cancel

3.to destroy or efface completely