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修正了没有区分框架的文本描述 #1379

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18 changes: 18 additions & 0 deletions chapter_preliminaries/ndarray.md
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Expand Up @@ -108,10 +108,28 @@ x
x.shape
```

:begin_tab:`mxnet`
如果只想知道张量中元素的总数，即形状的所有元素乘积，可以检查它的大小（size）。
因为这里在处理的是一个向量，所以它的`shape`与它的`size`相同。
:end_tab:

:begin_tab:`pytorch`
如果只想知道张量中元素的总数，即形状的所有元素乘积，可以检查它的元素个数（numel）。
因为这里在处理的是一个向量，所以它的`shape`与它的`numel`相同。
:end_tab:

:begin_tab:`tensorflow`
如果只想知道张量中元素的总数，即形状的所有元素乘积，可以对其使用检查大小（size）函数。
因为这里在处理的是一个向量，所以它的`shape`与它的`size`相同。
:end_tab:

:begin_tab:`paddle`
如果只想知道张量中元素的总数，即形状的所有元素乘积，可以检查它的元素个数（numel）。
因为这里在处理的是一个向量，所以它的`shape`与它的`numel`相同。
:end_tab:

```{.python .input}
#@tab mxnet
x.size
```

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