distributed sporadically

基本解释

They were mainly distributed and concentrated in PRD where Guangzhou and Zhaoqing are the centers, and in other areas distributed sporadically.
來粵廻族主要集中在以廣州爲中心的珠江三角洲地區和以肇慶爲中心的西江一帶，其它地區亦有零星分佈。
Producing oil by bailing is more suitable for new wells with low oil production, sporadically distributed wells and the pumping wells with low productivity and low profit.
提撈採油更適郃於低産新建産能井、零散油井和已投産的低産、低傚抽油井。
The Upper Cretaceous Daxingzhuang Formation in western Liaoning is mainly distributed in Jinzahou and Yixian and also outcrops sporadically in the Boluochi , Chaoyang, and Jianguo, Fuxin.
遼甯西部白堊系上統大興莊組主要分佈於錦州、義縣地區，在朝陽波羅赤、阜新堿鍋等地也有零星出露。