And let's now talk about dot products.

现在我们讲讲点积。

youdao

The entries in the matrix product are obtained by taking dot products.

矩阵乘积里的元素是通过点乘得到的。

youdao

OK, now, so there's an interesting thing to note, which is that we can use the usual product rule for derivatives with vector expressions, with dot products or cross products.

还有个很有趣的现象要注意一下，就是我们可以用乘积法则,对向量表达式求导，无论是点乘或叉乘。

youdao

Y. maker of personal care products, decided against opening a Web store and approached dot.com retailers to take it on-line.

FORBES: Net Losses

Green Dot said the deal will give the company improved customer acquisition and retention, drive the adoption of new banking and payment products targeted to new segments of consumers, and provide the opportunity for Green Dot to become a leader in mobile wallets, rewards and payment solutions at retailers.

FORBES: Green Dot To Buy Loopt For $43.4 Million In Cash

And, we might take it for granted today, but it is only very recently that the companies who survived the dot-com bust changed the way we communicate with others, book travel plans and buy products.

FORBES: Steve Jobs: Create. Disrupt. Destroy.