z I do F dot n. That just gives me the z component which might involve x, y and z.

把F和n做内积，于是得到,它由x，y，z组成。

youdao

Mode n: Make the dot match any character, including new lines.

模式n：使点匹配任何字符，包括新行。

youdao

Mode n: Make the dot match any character, including new lines.

模式n：使点匹配任何字符，包括新行。

youdao