Adjustable sprinkler system
作者： Edwin J. Hunter
DOI:
关键词:
摘要: An adjustable orifice sprinkler unit includes a tubular body member with rotatable cap mounted on one end thereof that cooperates peripheral edges of the for defining an arc spray adjusting pattern from angle about 0 degrees up to 360 axially selectively height opening.
lens.org 参考文章(5)
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