Length unit '' The description of a specification is as follows: 13.5 "* 11.2". What does this "stand for?"? In addition, why did the Western quotation marks I entered here turn into Chinese single quotation marks?

Length unit '' The description of a specification is as follows: 13.5 "* 11.2". What does this "stand for?"? In addition, why did the Western quotation marks I entered here turn into Chinese single quotation marks?

Inch [inch] inch is a unit of length. 1 inch = 2.5399918 cm (CM). Inch or [inch] is a unit of length used in the United Kingdom (UK) and its former colonies. It is also used in the United States and other countries. In Taiwan and Hong Kong, "inch" is usually written as "inch". The common abbreviation of inch is [in] or ["]" inch "is a newly coined word in modern times, It is a Chinese character with two pronunciations in one word. For example, "Li" is pronounced as "Hai Hai". It borrows the traditional Chinese unit of length "Cun" and adds a side of the mouth to show the difference. It was also used in the mainland and was abolished in the notice on the unified use of characters for the names of some units of measurement in 1977

What is s in a math problem?
For example, what's the meaning of 18S and 10s?

Short for second
Second means ~ and m h, respectively is the abbreviation of minute hour ~ is the meaning of minute hour
18S = 18 seconds 10s = 10 seconds

What does VTS stand for?
Your last answer is
V * t = s, so V1 * T1 = V2 * T2
What does VTS stand for?
How to make V1 * T1 = V2 * T2?
How to make V1 * T1 = V2 * T2

In the case that s is the same distance, V1 * T1 = V2 * T2, that is, the faster the speed is, the shorter the time is, and the slower the speed is, the longer the time is