查询词典 null

An important thing to note here is that ALL doesn't cause an aggregate function to consider NULL values.

使用All不会使聚集函数在执行时将空值包含在结果集中，只能使用NVL函数间接将空值转换成某个固定值，以使其能被包含在结果集中。

Even when an operation produces no output data, and lpOutBuf is NULL, the KernelIoControl function uses the variable pointed to by lpBytesReturned .

即使一个操作没有产生输出数据， lpOutBuf 是 NULL ， kerneliocontrol 函数使用 lpBytesReturned 参数指向的这个变量。

Wealso define a family of functions named an Anti de Sitter null height function on thetimelike surface.

尽管研究方法是类似的，但是在类时曲面情形可以得到很多新的几何信息。

If the app doesn't want to do anything special for this ID, it returns NULL, and the window function senses this and news up the appropriate default object.

如果程序不需要这个ID，则返回NULL，窗口函数根据返回值创建恰当的默认对象。

Indicates that we reject the null hypothesis at the 10 % level .

表明， 我们拒绝空假说在10 %级。

Sample size of 275 patients per arm would provide at least 90% power to test the null hypothesis.

在这里需要注意的一点是，样本量的计算是基于非劣效检验。

Our goal: use the evidence in a randomly selected sample of data to decide whether to accept the null hypothesis.

我们的目标：利用一个随机选取的样本提供给我们的证据来决定是否应当接受零假设。

Indicates that we reject the null hypothesis at the 5% level .

表明， 我们拒绝空假说在5%水平。

You want the null hypothesis, that the data are normal, to be true.

这个检验中，你不希望拒绝原假设，而希望证明数据是满足正态性的。

If we reject the null hypothesis that but cannot reject , we find evidences supporting eggs first.

如果零假设拒绝了却不能拒绝，则我们发现了蛋在先的证据。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。