The meaning of axis is as follows:
axis (Pinyin: zhóu, zhòu) is a first-level common standard Chinese character (commonly used character) in Chinese [3]. According to the existing ancient writing materials, the most ancient form of this character is seal script, but it is also found in pre-Qin works such as "The Book of Songs".
The original meaning of "axle" refers to a long cylindrical stick that runs through the wheel. By extension, rotation refers to a part on a mechanical device that can rotate the parts mounted on it. It also refers to a part that can rotate around an object. Or a rotating cylinder, and by extension the center. The line that bisects an object must pass through the middle, so "axis" also refers to the straight line that divides a plane or solid into symmetrical parts.
Explanation of Ancient Books
Shuowen Jiezi
Volume 14, Chebu Zhiliuqie (zhú, today read zhóu)
Holding the wheel. From the car to the sound.
Annotation Xu Kai's note: "It should be from Zhou Province."
Shuowen Jiezi Note
The person holding the wheel is also. The three words "so," are now supplemented. The axis holds the wheel. The extension is the hub of all things. If the loom holds the sutra, it is also called the axis. "Xiaoya": "The axis of the tree is empty", now it is called "pomelo", which is a common misunderstanding. If "Dialect" "earth is used to express the expression, and wood is used to express the axis", it is also an extended meaning. The expression is used as a tree, and the axis is used as a pomelo, both of which are wrong. The expression and axis of "Dialect" have nothing to do with "Dadong".
From the car, from the sound. Straight six cuts, three parts.
Kangxi Dictionary
The lower axis of Youji
(zhú, today read as zhóu) "Guangyun" and "Zhengyun" have six straight sections. "Ji Yun" and "Yun Hui" Zhong Liuqie and Yin Zhu. "Shuowen": holding the wheel. "Release Name": Axis, pumping. It can be pulled out when put into the hub.
And weaving tools. "Poetry·Xiaoya": The axis of the tree is empty. Note: Zhu, the one who holds the weft. Axis, the recipient.
Another scroll. Han Yu's poem: Ye Hou's family has many books, with thirty thousand scrolls in them.
The dry axis and the earth axis both mean rotation. Yuan Hong's "Ode to Famous Officials of the Three Kingdoms": Merge the axis. Mu Hua's "Hai Fu": The earth's axis is tall and straight_.
He also serves as the axis and governs the country. "Biography of Tian Qianqiu of the Former Han Dynasty": When the axis is in the center.
I am also ill and unable to walk. "Poetry·Wei Feng": The axis of great masters. Note: Illness. Note: It means lingering and failing.
Also a place name. "Poetry·Zheng Feng" The Qing people are in the axis. Note: Axis, river guard land.
A work of "Ji Yun"?.