Words from the age of 20.

1, precession: due to the gravitational force of the sun and the moon on the equator of the earth, the earth axis makes a conical motion around the ecliptic axis and slowly moves westward for about 25,800 years. At the same time, it causes vernal equinox to move westward at a speed of 50.2 seconds per year, which is called precession.

2. Income: the total income of the country in the budget year (relative to the "annual output").

3. Annual expenditure: all expenditures of the state in the budget year.

4. Beginning of the year: except the beginning of the year: the last day of the year, New Year's Eve.

5, the end of the year: when the year is almost over, the year is cold; Or an old man, an old man at the end of his life.

6, the beginning of the year: the beginning of a year, usually until the first month of the year: people's age: China ancients refers to Jupiter. Because Jupiter orbits the sky once every 12 years, and it runs every Sunday112, the ancients used the position of Jupiter as the standard of chronology, so it was called the year-old star.

7. Annual maintenance: carry out planned renovation and maintenance of various construction projects every year.

8. chronological order: it is easier to sort the years, and the chronological order updates the years.