| 摘要 |
PURPOSE: A device is provided to inject plural media from plural nozzles in order of time, to prevent dropping the media from the nozzles and to reduce mechanical or technical cost. CONSTITUTION: In this device, two or more media are injected from plural nozzles for median, each of which exists on each arm for medium. In such a case, the device possesses a suspending device for each arm for medium and plural nozzles for media are separately rotated around the same axis line(Z).
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