The abbreviation of hour is h, the abbreviation of minute is min, and the abbreviation of second is s, for example, 3 hours can be abbreviated as 3h, 3 minutes can be abbreviated as 3min, and 3 seconds can be abbreviated as 3s.

1 hour (hour) = 60 minutes (minutes) = 3600 seconds (seconds).

An hour is a unit of time. The hour is not the basic unit of the international system of time units (the basic unit of the international system of time units is seconds), but an auxiliary unit of time coordinated with the basic unit of the international system of units. Except leap second, one hour is generally equal to 3600 seconds, or 60 minutes, or 1/24 days.

Min (English abbreviation for minute), which is the abbreviation of the English word minute, meaning minutes. Min is the abbreviation of the English word minute, which means minute, and is mainly used as the unit of mathematical expression. For example, 986 rpm means 986 rpm.

S is the first letter of Chinese Pinyin. S is 19 in the Latin alphabet. S is widely used in various fields, and its representative meanings are different. For example, in physics, s means second, which is the unit of time; In chemistry, the chemical symbol of sulfur? ; In computer, it is a statistical programming language; Selina is in s.h.e；; In the Hollywood movie Superman, it is the symbol of American hero Superman.