| 摘要 |
A sprinkler includes a tube rotatably secured in a base for receiving water. A pipe has an extension rotatably secured to the tube and has a number of annular recesses and ports. A number of sleeves are rotatably engaged in the annular recesses of the pipe and each has one or more outlets adjustable to different angular position relative to the pipe for allowing the pipe to be rotated by water flowing out through the outlets. A bar may secure the pipe to the tube for allowing the tube and the pipe to be rotated in concert with each other.
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