婷婷国产天堂久久综合五I久久久久久久久久影院I亚洲精品乱码久久久久久蜜桃麻豆I在线欧美成人I午夜久久久久久久I91视频xxxI91五月天I制服丝袜一区在线Iav在线高清观看I欧美性受xxxx白人性爽I欧美老熟妇一区二区三区I国产人与禽zoz0性伦I国产精品久线在线观看I性xxx18I最新av不卡I日韩综合第一页I日韩人体视频I日韩精品视频三区I一区二区伦理片I777理伦三级做爰I青娱乐国产精品I国产精品福利小视频I亚洲网站视频I久久久九九九热I福利网址在线

  • Aquaculture cage can be cleaned by cavitation jet technology

    Oceanic ranch Aquaculture cage can be cleaned by cavitation jet technology。Comparison of cleaning effect

    2021/01/21 高壓清洗機

  • UNDERWATER HULL CLEANING BACKGROUND

    Human had encountered the underwater fouling phenomenon since the times when the first ships and the first primitive waterworks had been built. At first this phenomenon appeared not to have any seriou

    2019/06/26 高壓清洗機

  • 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 page1Next page Go to No.
主站蜘蛛池模板: 普宁市| 延津县| 余干县| 连南| 湛江市| 景洪市| 连平县| 耿马| 宾川县| 耒阳市| 永泰县| 台湾省| 蕲春县| 周至县| 武平县| 赤城县| 三都| 云梦县| 长寿区| 阿克苏市| 织金县| 宜兰县| 调兵山市| 柘城县| 洛阳市| 同江市| 保定市| 新源县| 泽库县| 宁陵县| 宜昌市| 松桃| 邹城市| 晋城| 喀喇| 新密市| 吴川市| 郯城县| 苏尼特右旗| 平果县| 泾阳县|