horizontal extent meaning in English

水平范围
水平引伸

Microbursts induced by thunderstorms microburst is the most violent form of downdraft from a thunderstorm . it is characterized by an intense and localized descent of cool air , causing a sudden outflow of horizontal winds above the ground with a typical horizontal extent of a few kilometres
微下击暴流是由雷暴引致的一种最猛烈的下沉气流，其特徵是一团强烈而局部的冷空气下沉，引致地面上出现突如其来在水平方向往外扩散的风，范围通常达数千米。
Microbursts induced by thunderstorms microburst is the most violent form of downdraft from a thunderstorm . it is characterized by an intense and localized descent of cool air , causing a sudden outflow of horizontal winds above the ground with a typical horizontal extent of a few kilometres
微下击暴流是由雷暴引致的一种最猛烈的下沉气流，其特徵是一团强烈而局部的冷空气下沉，引致地面上出现突如其来在水平方向往外扩散的风，范围通常达数千米。