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shen song li de gai zhuang
Author(s): 
Pages: 38
Year: Issue:  1
Journal: Farm Machinery

Abstract: <正> 黑龙江省友谊农场五分场五队有深松犁5台,由于深松犁的作业深而不松,并留有空格,所以作业效果不好。 1998年麦收中,五分场五队组织人员把深松犁改装成双层双翼深松犁,通过反复试验获
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