null

美式发音: [nʌl] 英式发音: [nʌl]

adj.没有价值的；无用的；【法】无法律效力的；【科技】没有

n.【数】数字零；【计】空位；空白符号；【电子】无信号

v.抵消；〈罕〉【法】宣布无效；〈罕〉彻底消灭

网络释义：空值；空字符；空指针

复数：nulls  过去式：nulled  现在分词：nulling  搭配同义词反义词

Adj.+n.null string

adj.valid

adj.invalid,null and void,void,unacceptable,unsound

网络释义

null显示所有例句adj.

1.零值的；等于零的having the value zero

a null result毫无结果

IDM

The contract was declared null and void.合同被宣布无效。

null and void无法律效力的；无效的having no legal force; not valid

The contract was declared null and void.合同被宣布无效。

adj.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.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

n.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.【数】数字零2.【计】空位;空白符号3.【电子】无信号4.〈比喻〉空虚

v.1.抵消2.【法】〈罕〉宣布无效3.〈罕〉彻底消灭

adj.1.with no value or effect2.[Law]of no legal or binding force3.[Sci-Tech]amounting to nothing4.[Mathematics]having or associated with the value zero5.[Logic,Mathematics]of a class or set: having no members6.lacking distinctive qualities, traits, or characteristics1.with no value or effect2.[Law]of no legal or binding force3.[Sci-Tech]amounting to nothing4.[Mathematics]having or associated with the value zero5.[Logic,Mathematics]of a class or set: having no members6.lacking distinctive qualities, traits, or characteristics

n.1.[Mathematics]a zero2.[Computer]a character which produces no effect or action but is used to fill up a space or to separate pieces of information3.[Electronics]a condition of no signal4.<figurative>a state of emptiness, featurelessnes1.[Mathematics]a zero2.[Computer]a character which produces no effect or action but is used to fill up a space or to separate pieces of information3.[Electronics]a condition of no signal4.<figurative>a state of emptiness, featurelessnes

v.1.to cancel out or remove (a force, effect, signal, etc)2.[Law]<rare>to annul or cancel3.<rare>to destroy or efface completely

1.空 notation 记法；记号 null 零; 空 null hypothesis 零假设; 虚假设 ...

5.空指针 nocturne n 小夜曲，梦幻曲 null a 无效的，等于零的 nutrient n 营养品 ...

7.空的如果你指定了空的（NULL）安全描述符，那么管道将得到一个默认的安全描述符。管道默认安全描述符里的ACLs来自于管道 …

造句带翻译释义:,没有价值的,无用的,无法律效力的,没有,数字零,空位,空白符号,无信号,抵消,〈罕〉宣布无效,〈罕〉彻底消灭,空值,空字符,空指针

1.This tip addresses one of those cases: the distinction between an array which is null, and an array which has no elements.这里介绍的技巧用于处理其中的一个情况：一个为“零”的数组和一个没有元素的数组之间的差别。

2.NULL constants cannot be inserted into a timestamp column through a distributed query.无法通过分布式查询将NULL常量插入timestamp列中。

3.This certificate shall be considered null and void in case of any alteration.任何修改，本证书将被视为无效。

4.In todo_foreign, that would require two columns; the deletion date might be null to indicate that the item is still active.在todo_foreign中，这将需要两个列；删除日期可能为null，表示该事项仍然在活动中。

5.For a calculation of the exact benefits of NULL and system default compression, it would be necessary to count these values per column.若要精确计算NULL压缩和系统默认值压缩所节省的空间，则需要逐列地计算这些值的数量。

6.In China, where the deprivation of a minor violation of the law and unable to work the right to inherit part of the heirs, null and void.在中国，凡违背法律规定剥夺未成年人和无劳动能力的继承人的继承权的部分，归于无效。

7.To declare a variable and initialize it without assigning it a particular value, assign it the JScript value null.若要在不分配特定值的情况下声明一个变量并对其进行初始化，请为其分配JScript值null。

8.The results do not make it easy to distinguish a NULL in the data from a NULL that represents a failure to join.从结果中很难区分数据中的NULL值和表示联接失败的NULL值。

9.Attribute value with a null reference assigned to a reference type or to a nullable value type.属性值等同于分配给引用类型或分配给可为空值类型的空引用。

10.The constructor function has no parameters and returns an instance of the type with all of its attributes set to null values.构造函数没有参数，并且返回的类型实例中的所有属性都为空。