IELTS、TOEFL

null单词基本解析：

adj.<术>零值的; 等于零的; （协议） 无法律效力; 失效的
adj.无效的, 无价值的,无效力的n.零, 空 vt.使无效
adj.零值的；等于零的；（协议） 无法律效力；失效的

null变化用词：

动词过去式: nulled | 动词过去分词: nulled | 动词现在分词: nulling | 动词第三人称单数: nulls |

null英英释义：

Noun

1. a quantity of no importance;

"it looked like nothing I had ever seen before"

"reduced to nil all the work we had done"

"we racked up a pathetic goose egg"

"it was all for naught"

"I didn't hear zilch about it"

名词 null:

a quantity of no importance

同义词：nothing, nil, nix, nada, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippo

形容词 null:

lacking any legal or binding force

同义词：void

null[ nʌl ]n.a quantity of no importance

同义词：nothingnilnixnadaaughtciphercyphergoose eggnaughtzerozilchzipzippo

adj.lacking any legal or binding force

"null and void"

同义词：void

null中文词源：

null用法和例句：

A spokeswoman said the agreement had been declared null and void.

女发言人称该协议已宣布无效。

柯林斯例句

The agreement will be considered null and void.

该协议将被视作无效。

辞典例句

When the galvanometer reads zero the circuit is in the null - balance position.

当检流计的读数为零时,电路处于零平衡位置.

辞典例句

This null - balance system is usually more accurate than the direct - readout bridge.

这种调零系统通常比直读电桥更精确.

辞典例句

The court ruled that the claim was null and void.

法庭裁决此项要求无效.

辞典例句

The operator O is the null operator.

算符O是零算符.

辞典例句

This check is null and void.

本支票无效.

辞典例句

This contract is null and void.

此合同无效.

辞典例句

The null subset corresponds to the term 1.

空集则对应于常数项1.

辞典例句

The null result of the Michelson - Morley experiment suggests that the effects of the ether are undetectable.

迈克耳 孙- 莫雷实验的否定结果使人想到,以太的效应是不能检查到的.

辞典例句

Whenever we reject the null hypothesis, the conclusion we do accept is called the alternative hypothesis.

无论何时,拒绝无效假设时, 我们所接受的结论叫做备择假设.

辞典例句

The null result was directly related to a central postulate of the theory.

零结果都直接与理论的中心假设相联系.

辞典例句

A null - balance system is provided by balancing the magnetic forces by electrostatic forces.

零位平衡系统是靠静电力来平衡磁力而造成的.

辞典例句

The device provides extreme sensitivity through a small range around the null point.

此装置在零点附近很小一段范围内具有极高的灵敏度.

辞典例句

The term null hypothesis arose from earlier agricultural and medical applic ation of statistics.

无效假设这个概念产生于早期的统计学在农业和医学方面的应用中.

辞典例句

null

Constant_expression is a constant, NULL, or a system function value.

constant_expression可以是常量、NULL或系统函数值。

The dept_head_id column has no default, but can allow NULL.

dept_head_id列没有缺省值,但它允许使用空值。

The Expression must be a literal or null, or a static function.

Expression必须为文字、null或静态函数。

The NULL value introduces the concept of three valued logic to SQL.

NULL值将三值逻辑的概念引入SQL。

The NULL value is used to represent missing or inapplicable information.

NULL值用于表示缺少或不适用的信息。

NULL represents all values in the set from which the aggregate is computed.

NULL表示结果集中为其计算了聚合的所有值。

Properties ('Key') will return null for composite keys.

Properties('Key')将为组合键返回null。

The property element has three attributes: name, type, and null.

Property元素具有三个属性:name、type和null。

"Die VDMA Prognose lautet deshalb unveraendert auf plus Null.

“根据VDMA的预测，该行业仍将保持正增长，” Klingenberg又说。

A promise obtained by force is legally null.

一个以武力获得的契约在法律上是无效的。

A null field descriptor is the descriptor that forms the blank division in export.

一个空白字段描述符是在输出中形成空格的描述符。

The process of inserting meaningless characters, such as null characters, zeros, or spaces, into the unused portions of a field, record, or fixed- length block of data.

一种插入一些无意义字符的处理方法。例如，在一个字段、记录或固定长度数据块的不用部分插入空字符、零或空格。

All three return:nonnull pointer if OK,NULL on error?

三个函数返回：若成功为非空指针，出错为NULL?

When read methods are invoked on Null, zero is always returned.

上调用读方法时,总是返回零。

The following list expands on the properties of NULL.

下面详述NULL的属性。

However, you can create your own null handling procedure for a bound field.

不过,您可以为绑定字段创建自己的null处理过程。

Null pointers for two different types are sometimes different.

两种类型的空指针有时不同。

Allow or prohibit NULL for each attribute.

为每个属性指定是否可以为空。

The contract was declared null and void by the competent authority.

主管部门宣布该合同无效。

Primary keys do not allow null values.

主键不允许空值。

Also returns a null reference.

也返回空引用。

Thrown by the runtime only when a null object is referenced.

仅当引用空对象时,才由运行库引发。

They declared the contract null and avoid.

他们宣布合同无效。

To look for null values before calling this method.

以便在调用此方法之前查找空值。

To check for null values before calling this method.

以便在调用此方法之前检查null值。

Sell, gift or trade any Account, and any such attempt shall be null and void.

任何这样的企图都是无效的。

On a dimension attribute results in null values for all of its members.

会针对其所有成员生成空值。

But a null value cannot be assigned to it.

但不可赋予它空值。

However, you can enter a null value in the foreign key field.

但是,您可以在外键字段中输入Null值。

Given file is null or has empty size.

你上传了什么文件呀？空的吗？检查下就知道了。

Replaces NULL with the specified replacement value.

使用指定的替换值替换NULL。

Truncate insignificant trailing zero when using null scale.

使用空刻度时截去多余的零结尾。

Modify your application to look for a NULL heap name.

修改应用程序以查找NULL堆名。

Fixed a crash bug in array_map() when NULL callback was passed in.

修正了在 array_map() 里面在回调是一个 null 时的缺陷

Attributes that have a null value do not appear.

值为空的属性不会出现。

A NULL value indicates operating-system independence.

值指示与操作系统无关。

Null Subjects in Child English: A Grammatical Phenomenon?

儿童英语中的空主语：一种语法现象?

The relation is a null value.

关系为空值。

Almost every new law makes some old one null and void.

几乎每一新的法律实施都使得某一旧的法律无效。

List your hypotheses (both null and alternative hypotheses).

列出你的假设(包括没有假设和选择性假设)

A column is part of a clustered index key that may be null.

列是可能空聚集索引键的一部分。

Or, if the address is null, create an unbound socket.

创建一个绑定在指定套接字地址的多播套接字。

Initializing an array or record to null.

初始化一个数组或记录为。

Initialise the object, set all properties to null, zero or false.

初始化的对象，所有属性设置为null ，零或FALSE 。

Checks if a String is empty ("") or null.

判断一个字符串是否为空，空格作非空处理。

Checks if a String is not empty ("") and not null.

判断一个字符串是否非空，空格作非空处理.

Decide the object is not null.

判断一个对象是否不为空.

Should do when it contains a null value.

包含空值时所应执行的操作的信息。

A column may contain null values, even if it cannot be set to a null value.

即使列无法设置为空值,它仍可能包含空值。

Parameter {0} darf nicht Null sein.

参数 {0} 不允许为零。

A null reference pointer was passed to the stub.

向占位程序传送了空的索引指针。

Can also be null to use BFP input or BFP quickwatch.

听 听 听*听 听 听 string function:听 听 the function to be solved.

Your member should check for a null array before processing it.

在处理null数组之前,成员应对其进行检查。

NULL, 0, and DEFAULT are equivalent values in this context.

在此上下文中,NULL、0和DEFAULT是等价值。

In this case, you do not have to use the WHERE clause to test the IS NOT NULL.

在此情况下,不必使用WHERE子句测试IS NOT NULL。

In the result set, the FK_NAME and PK_NAME columns always return NULL.

在结果集中,FK_NAME和PK_NAME列总是返回NULL。

English: Plugins directory is null.

增效模组目录是空的。

At least one value in the foreign key column is NULL.

外键列中至少有一个值为NULL。

The sky vector may not be a null vector.

天空向量不能是空向量。

Failure. The NULL value has been passed as a parameter.

失败。将空指针NULL传给了一个参数。

Requestor context being initialized with null subject.

好像是9043端口问题，可不知怎么解决，请指教。

If array is empty (or is not an array), NULL will be returned.

如果array为空(或者不是数组)将返回NULL。

If Divisor evaluates to a null value, the operator raises an error.

如果Divisor的值为空值,则该运算符将会报错。

Is NULL if the DOM object does not have a name.

如果DOM对象没有名称则为NULL。

If filter_clause is null, all bulk loaded rows are added.

如果filter_clause为NULL,将添加所有大容量加载的行。

If integer_expression is negative, a null string is returned.

如果integer_expression为负,则返回空字符串。

When new_name is NULL, the name of the schedule is unchanged.

如果new_name为NULL,则不更改计划名称。

If sid is NULL, the system generates a SID for the new login.

如果sid为NULL,则系统将为新登录生成SID。

If var is not an array, 1 will be returned (exception: count(NULL) equals 0).

如果var不是数组类型,将返回1(例外:count(NULL)的结果是0)。

If there is no such node, this property returns null.

如果不包含这类节点，该属性将返回空值。

If the column name cannot be determined, a null value is returned.

如果不能确定列名,将返回空值。

It is NULL if not applicable to the data source.

如果不适用于数据源,则为NULL。

Delimiters are required for interior null component groups.

如果中间的部分省略则需要用“=”分隔；

If NULL or an empty string, password is reset to a random value.

如果为NULL或空字符串,则密码重置为随机值。

If the value is null, the check box is set to false.

如果值为空,复选框便会设置为false。

If this column allows for NULL, this column returns YES.

如果列允许NULL,则该列将返回YES。

Vomit in null gravity wouldn't be fun.

如果在零重力下呕吐了可不是件好笑的事。

Is thrown if the object reference is a null reference.

如果对象引用是空引用,则引发。

If the primary key cannot be found, then a null value is returned.

如果找不到主键,则返回空值。

If the specified member does not exist, the function returns null.

如果指定的成员不存在,该函数将返回空。

用作形容词(adj.)

Their actions rendered the contract null and void.
他们的行为使合同无效。

The marriage was declared null and void.
婚姻已宣告无效了。

用作名词(n.)

The path must end with a null character.
该路经必须以零结尾。

Vomit in null gravity wouldn't be fun.
如果在零重力下呕吐了可不是件好笑的事。

A null reference pointer was passed to the stub.
向占位程序传送了空的索引指针。

Primary keys do not allow null values.
主键不允许空值。

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