例文
- Cone lengths averaged about 42 mm ?3.5 mm and similar coefficients of variability to those of cone length.
- Mean length of needles was 13.5 mm ?2 mm, with coefficients of variability ranging from about 11 to 20.
- Dimensions of cones, however, were less variable; mean diameter was 13.5 mm with a standard deviation of slightly more than 1 mm and coefficients of variability from 6 to 10.