The definition of clothing size is to choose the most representative parts according to the laws of normal human body and the needs of use, and to merge and set them reasonably. "No."refers to the height, expressed in centimeters, which is the basis for designing the length of clothing; "Type" refers to the circumference, expressed in centimeters, as the basis for designing the circumference of clothes.
Waist circumference is the horizontal circumference of the waist through the umbilical point (om), which is a comprehensive index reflecting the total fat and fat distribution. The measurement method recommended by the World Health Organization is that the subjects stand with their feet 25 to 30 cm apart and their weight is evenly distributed.
References:
Baidu encyclopedia-waist circumference