较差 jiàochàjiàochā mediocre Definitions Defs Origin Strokes Stroke Words Sentences Sents 年较差 niánjiàochā annual range the range between the highest and lowest values of something, such as temperature or humidity, over the course of a year日较差 rìjiàochā diurnal range (meteorology) the range between the daily maximum and minimum of a variable, such as temperature or humidity