Length unit, mm, mm, cm, cm what does it mean?
China uses metric units, the basic unit of length is "millimeter", "centimeter", "meter", corresponding to the use of international units in mainland China's "millimeters", "centimeters" and "meters."
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China uses metric units, the basic unit of length is "millimeter", "centimeter", "meter", corresponding to the use of international units in mainland China's "millimeters", "centimeters" and "meters."