dot product

US 
UK 
  • un.点积；标量积
  • Web点乘；数量积；内积

E-C

Web Definition

un.
1.
点积
2.
标量积

Sample Sentence

Definition:
AllAll,点积点积,标量积标量积,点乘点乘,数量积数量积,内积内积
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
1.
Since scalars are independent of the coordinate system, the dot product of two vectors is called a scalar invariant.
因为标量与坐标系无关，故两个矢量的点积称为标量不变量。
yīn wèi biāo liàng yǔ zuò biāo xì wú guān , gù liǎng gè shǐ liàng de diǎn jī chēng wéi biāo liàng bù biàn liàng 。
2.
If I take the dot product But now, what does it mean that the dot product between OP and A is zero?
如果我用OP·A我就得到了，那么OP和A的点积是0代表了什么呢？
rú guǒ wǒ yòng OP · A wǒ jiù dé dào le , nà me OP hé A de diǎn jī shì líng dài biǎo le shén me ne ?
open.163.com
3.
It's the dot product between the normal vector of a plane and the vector along the line.
这是平面法向量，和沿直线向量的点积。
zhè shì píng miàn fǎ xiàng liàng , hé yán zhí xiàn xiàng liàng de diǎn jī 。
open.163.com
4.
And I can rewrite this in vector form as the gradient dot product the amount by which the position vector has changed.
可以把这些用向量形式重新写下来，就是梯度向量和位置改变量的点积。
kě yǐ bǎ zhè xiē yòng xiàng liàng xíng shì chóng xīn xiě xià lái , jiù shì tī dù xiàng liàng hé wèi zhì gǎi biàn liàng de diǎn jī 。
open.163.com
5.
Also note that you can calculate the dot product only if the two vectors have the same number of components .
另外请注意，只有当两个矢量的组件数相同时，才能计算点积。
lìng wài qǐng zhù yì , zhǐ yǒu dāng liǎng gè shǐ liàng de zǔ jiàn shù xiāng tóng shí , cái néng jì suàn diǎn jī 。
www.bing.com
6.
But, you will see that notation somehow helps to make it more straightforward So, what is dot product?
但是你会发现，这个方法会让问题更简单，那么，什么是“点积”？
dàn shì nǐ huì fā xiàn , zhè ge fāng fǎ huì ràng wèn tí gèng jiǎn dān , nà me , shén me shì " diǎn jī " ?
open.163.com
7.
Under most conditions, the dot product can be ignored, so the assumption of the uniform intensity is rational.
在大多数应用中，点乘项可以忽略，因此，光强均匀的假设是合理的。
zài dà duō shù yìng yòng zhōng , diǎn chéng xiàng kě yǐ hū lüè , yīn cǐ , guāng qiáng jūn yún de jiǎ shè shì hé lǐ de 。
www.opticsjournal.net
8.
So, that's going to be one of the main uses of dot product.
呃，这就是点乘的一个主要用途。
è , zhè jiù shì diǎn chéng de yī gè zhǔ yào yòng tú 。
open.163.com
9.
The dot-product direction of the light with the vertex.
点乘每个点光的方向向量。
diǎn chéng měi gè diǎn guāng de fāng xiàng xiàng liàng 。
allfreesearch.com
10.
Let us take a down-to-earth example of a dot product.
举一个点积的，现实例子。
jǔ yī gè diǎn jī de , xiàn shí lì zǐ 。
open.163.com