PTC has two meanings, namely "percentage" and "patent cooperation treaty":
1, when PTC stands for percentage, it is the abbreviation of the English word percent, which stands for percentage. For example, 100PCT, that is, what is 100%, is generally applied to the ratio, that is, the value obtained by comparing two numbers.
2. When PTC stands for patent cooperation treaty, it is the abbreviation of patent cooperation treaty and an international cooperation treaty in the patent field.
Percentage profile:
Percentage, also known as percentage or percentage, means that one number is the percentage of another number, and it is a way to express the numerical value of proportion, ratio or fraction. Usually it is not written as a fraction, but as a percent sign%, such as 1%, 82%, etc.
Because the denominator of the percentage is 100, that is, 1% is the unit, so it is easy to compare. Percent only indicates the relationship between two numbers, so you can't add units after the percent sign.
Reference to the above content: Baidu Encyclopedia -PCT