| 摘要 |
PURPOSE: A liquid ejection apparatus is provided to prevent a water hammer phenomenon by forming a groove and a protrusion. CONSTITUTION: A housing(510) is included in the inner side of a shower head(310). An injection nozzle(210) is inserted in the housing. The housing includes a plurality of grooves(516). The groove is formed in the end tip of the circumferential direction of the housing. The housing includes a plurality of protrusions(518).
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