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JQ/CS 39 stern shaft sealing apparatus
说明：
长江及内河航行的船舶，且润滑工作介质为油类，船舶艉轴直径较小时，建议选用该类装置。
Remarks:
When inland water vessels have oil as their lubricating working medium and do not have a large stern shatf,this type of apparatuses is suggested to be chosen.
