日本高清二区视频久二区,中文最新版地址在线,最近中文字幕免费MV在线视频,国产啪精品视频网站

  • Ship anti - fouling, the United States, new, Australia new regulations

    ?Introductionto Biofouling refers to biological pollution caused by the partial deposition of various aquatic organisms (microorganisms, plants, algae and animals) under the ship, which may lead to the invasion of foreign aquatic species into the local Marine environment. Even a small or slight amount of hull fouling can increase the drag on the hull and propeller in the water, which in turn affects fuel consumption (cost) and gas emissions. Therefore, in many cases, hull cleaning management can be regarded as an effective measure to improve ship performance and fuel efficiency.

    2018/08/14 qxp

Previous page12Next page Go to No.
CHINESE熟女老女人HD| 99热亚洲色精品国产88| 特级做AA爰片毛片免费看| 欧美性猛交XXXX黑人猛交| 亚洲国产精品无码久久网速快| 色综合99久久久无码国产精品 |