All the above are "2"Chinese numeralsIndicates that "2" is Chinesea lowercase letter"Two" is a Chinese capital figure, and the rest are variant characters.Capital figures"II" is generally used forbankBookkeeping.
stayModern Standard ChineseMedium,numeral2 In different cases, it is often necessary to change the words to meet the needs of use, which does not exist or is very rare in other numerals.For example, replace "two" with "two".
GenerallyOrdinal number"Two" (including the ordinal number of the word "the" omitted) shall be used.For example: 1234, February 2, the second day of the first month, the 27th strike, the second, second-hand ("second")Abbreviation）, World War II（“‘the Second World War”Erguotou, Queen Elizabeth II, Northwest Wind IInorthwest wind)computer second-level(The abbreviation of "Level II" computer level).
It can be interpreted as“The cardinal number of "two+quantifier"Proper nounAnd in idioms, "two" should be used.Example:carbon dioxide(contains "two"Oxygen atom）、Binary(including "two" numbers), Erlao ("two" old people), Errenzhuan ("two" people performing), Erhu ("two" strings).In traditionunits of measurementBefore, "two" should be used.Example: Two feet, two liang, two stone, two inch, two li.
"Two" or "two" should be used in science (including mathematics) and written language.Example: biological terms“Biennial plant”、“diploid”，Multiplication formula"Two four wins eight",RMBThe face value is "two yuan (two yuan)" and the amount is in figuresa lowercase letterUse "two" and "two" in capital.In negative numbers, decimals and fractions, "two" should be used.Example: - 2 ℃ is negative twocentigradeOr two degrees below zero, 0.25, 2.17, or one-half.
Use "two"
GenerallyCardinal number word"Liang" should be used (including the base number of partially omitted "quantifier").For example: two, two, amphibious (the abbreviation of "two ways to inhabit"), bipolar (the abbreviation of "two extremes"), gender, cross-strait.
In modern timesunits of measurementBefore, "two" should be used.Example: two minutes (2min), two milliliters (2mL), two centimeters (2cm).
In idioms that can be interpreted as "both" or "both sides", "two" should be used.Ex.: Both sides are willing, both sides have the best of both worlds, and both sides lose.
stayMultibit numberAmong them, "two" can be used for thousands, tens of thousands and hundreds of millions.Example: 2000 tons, 20000 square meters, 200 million people.
Be politedirect addressWhere the word "two" should have been used, it can be changed to "two" as the case may be.For example: two guests, emphasize when saying "two guests"number, saying "two persons" is usually used as a pronoun address (generally, it is not used to describe the number of people politely).
Two (li ǎ ng) are applied toaviation, military and other fields, but also used for folk spoken language, such as: two jin, two days, two.
2 is an even number.Any even number can be expressed as
On the contrary, any odd number can be expressed as
。
No. 2, the second position of the sequence number, the second position of the product or thing, such as seat 2 and product 2.
2 is the only even prime number (prime number)[1]。nextPrime numberIt is 3.Because there is more than onefactor, so it is also aHigh composite numberThe next high composite number is 4.
Dihedral angle: one in the faceStraight handlebarThe plane is divided into two parts, each of which is calledHalf planeThe figure formed by two half planes starting from a straight line is called dihedral angle. This line is called the edge of dihedral angle. Each half plane is called the face of dihedral angle.
DihedralPlane angle: Take any point on the edge of the dihedral angle as the endpoint, and make two lines perpendicular to the edge in two facesradialThe angle formed by these two rays is called the plane angle of dihedral angle.
one thousand one hundred and twenty-five trillion and eight hundred and ninety-nine billion nine hundred and six million eight hundred and forty-two thousand six hundred and twenty-four
one hundred
1267650600228229401496703205376
……
Multiple table
Overview: Any integer, as long asOnesIf it is 0,2,4,6,8,10, then this number is 2multiple。See the following example:
multiplier
product
one
two
two
four
three
six
four
eight
five
ten
six
twelve
seven
fourteen
eight
sixteen
nine
eighteen
ten
twenty
eleven
twenty-two
twelve
twenty-four
thirteen
twenty-six
fourteen
twenty-eight
fifteen
thirty
sixteen
thirty-two
seventeen
thirty-four
eighteen
thirty-six
nineteen
thirty-eight
twenty
forty
......
......
In mechanics
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Two force synthesis
If the effect produced by one force is the same as that produced by the joint action of two forces, this force is called the resultant force of those two forces, and finding the resultant force of these two forces is calledForce synthesis。
If the two forces acting on an object are equal in magnitude and opposite in direction, and on the same straight line, the two forces will balance each other.
There are many things in our body that also appear in pairs.From top to bottom, you can also find many:
CerebrumLeft brainAnd the right brain.The left and right eyes of the eye.The left and right hands of the hand.Ears... There are many examples of this.
To sum up, 2 is aBalanceStrong numbers.If there is no opposition between the left and the right, I'm afraid that people can't even stand steadily.
2 is still symmetrical.A folded paper presents us with two identical worlds, whetherinsectstillmammal, the number of legs must be a multiple of 2.The mirror also shows us two equal worlds.
Some things in EnglishgrammarIt reflects some special meanings of 2.For example, I already have two apples. If I want a third apple, I have to use second
Therefore, 2 also represents another meaning: extra, other
2 is the fence from singular to plural.
by the way,lordThe "2" given to people also has two genders.If human beings have three genders, then reproduction is a question worth discussing
Therefore, 2 is also antagonistic.There are many opposites in nature.There are two kinds of magnetic poles, N and S, and two kinds of genderMaleAnd Female, there are two kinds of charges,+and -, and even matter can be divided into two kinds, positive matter andAntimatterThere are also double stars in nature, and there areYin Yang fish(Taijilogo ）Yin and Yang, positive and negative, north and south,... many, many.
Think about what you are usingcomputerThe computer uses binary system because there are two states of the circuit: connected and disconnected (short circuit means connected), that is, the current is divided into two states, yes and no, and the computer is composed of this small 1 and 0.
Some people use 2 instead of fools, idiots, etc.
In literature
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The culture of 2 has existed since ancient timesHuman historyThe same period of development has come into being. In ancient China, the army needed two things to go to war: Fuhe Ling.Scholars cannot give lectures without 2. There has never been a person who asked questions about his own lectures, and there has never been a scholar who asked questions about himself. The monarch must also rule the country in the same way. When he hears about government affairs, he must probe downward.Anyway, 2Chinese literatureIt is of great significance.
fromPanguAt the beginning of the day, two people were created, men and women, fromFirst Emperor of QinTo unify the six countries, split and unify, people have two ideas.With the founding of New China in 1949, history has changed, and people have two ideas: the old and the new.
Times are two changes.
Manufacturing industry
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Line 2 and Line 2 are produced. Many industrial chains in China have No. 2,Product lineNo. 2, company, factory and enterprise factory are everywhere,Production chainThere is No. 2 on the top, No. 2 on the product, and No. 2 factory in the factory, for example, No. 2 production line,Jingquan No. 2Another example is Plant 2.No. 2, an indispensable production line in China's industrial chain.The indispensable position 2.
In a derogatory sense, it is used to describe a person who is simple in mind and foolish in behavior.
commendatory sense
When it comes to commendation, it describes a person who has a unique style, is very cute~very humorous~very elegant~there is a saying called "very naive".
2 You can also say "2" when you complain, which means that the work is terrible and very wordless.
Other fields
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"2&" in WordArt;amp;amp;amp;amp;amp;amp;amp;amp;amp
In ancient China, silverCurrency in circulation，Monetary unitIt is "two", five hundred liang is "one", two hundred and fifty liang is "one"“Semiseal”The same sound as "half crazy", people use two hundred and fifty to describe a person as half crazy and stupid, which gradually evolved into a modern "2".
diode, which has a one-wayelectric conductionPerformance, i.e. adding anode and cathode of diodeForward voltageWhen, the diode is on.When adding anode and cathodeReverse voltageWhen, the diode turns off.Therefore, the on and off of the diode is equivalent to the on and off of the switch.
