sparger ring
... 喷嘴 sparger 喷嘴圈 sparger ring (通)气搅(动) sparging ...
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冲洗喷嘴圈 RINSE JET RING
喷嘴挡圈 nozzle retaining ring
喷嘴环外圈 nozzle outer ring
喷嘴环内圈 nozzle inner ring
环圈喷汽嘴 ring steam jet
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至于缺点，它需要一个特别的喷嘴和挡圈来容纳材料的回退。
As for disadvantages, it requires a special nozzle and check ring to accommodate material coming back into the injection unit.
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