升级船舶推进系统 MAN Propulsion system upgrade to reduce f
介绍
升级船舶推进系统 MAN Propulsion system upgrade to reduce fuel consumption and emission
https://www.bilibili.com/video/BV1yq4y1k7Y6?spm_id_from=333.999.0.0
https://www.bilibili.com/video/BV1yq4y1k7Y6?spm_id_from=333.999.0.0
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