An Israeli engineer named Symcha Blass developed the idea of trickle irrigation in the 1930s, but it had to wait until plastic tubing was available to make a practical system.

 
  • 一位名叫西姆查"布莱斯的以色列工程师在19世纪30年代就提出了滴灌这个想法,但是,直到塑料管道问世后,才制造了实用的滴灌系统。
今日热词
目录 附录 查词历史