发明人: author of the inventioncontriverdeviserinventerinventor
Example Sentences:
1.
Recent no - tillage and ridge culture commenced in the united states in the 1930s . it was developed to prevent the erosion of water and soil and to avoid the wind and water erosion . not until the atrazine herbicide was invented and successfully used in the 1960s was the nt technique succeeded and spread 近代的免耕始于20世纪30年代的美国，为了防治水土流失，防止风蚀和水蚀而发展起来的，到60年代，阿特拉津除草剂的发明利用，才使免(少)耕法得以成功应用和推广。
