Ton is a Chinese character, pronounced as dūn, and expressed as t with letters. It is often used as a unit of mathematical quality, and it is often used to measure the weight of larger items in life. This character is recorded in Ugly Collection and Kouzibu.

Ton is a transliteration word used as a unit of weight or ship volume. The traditional Chinese character "dun" consists of "kou" and "dun", where "kou" means transliterated foreign words and "dun" approximately means its pronunciation.

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For example, 1t compressed air storage tank: 1m3 or 1000L storage tank volume, 10t reactor: 10m3 or 10000L reactor capacity. A unit for calculating the volume of a ship, one ton is equal to 2.83 cubic meters (100 cubic feet). ?

American units of mass or weight, British tons and American tons; Some industries use tons to mark the volume of tanks: in fact, the water quality of 1 m3 is about 1 ton.