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air flotation device 气浮装置
PFD - Personal Flotation Device;a life preserver. Position Finding Device,位置测定位，测位仪[器];
In case of a water landing, you may be used as a flotation device. 由于要在水上降落,你可能要被。
The pet food processing wastewater is treated by hydrolysis contact oxidation air flotation process. 介绍了水解接触氧化气浮工艺在宠物食品加工废水中的应用。
In the unlikely event of a water landing, your seat cushion may be used as a flotation device. 如飞机降落在水中，您的坐垫可用作救生器械;但这种情况不太可能发生。
The air-sparged hydrocyclone has been used as a centrifugal flotation device since it was invented in the 1980s. 充气水力旋流器自从问世以来,一直被当作离心浮选设备来研究和使用。
The cavitation air flotation(CAF) has been widely applied to the industrial wastewater and sewage pretreatment in cities. 涡凹气浮(CAF)已广泛应用于工业废水和城市污水的预处理中。
The problems of air flotation process to remove algae in waterworks are summarized. The causes are dis-cussed and counter-measurements are suggested. 总结了自来水厂气浮除藻实践中存在的问题，并分析产生这些问题的原因，提出一些对策。
SAFETY FIRST: Since you will be by water, all children should wear a life preserver (PFD or Personal Flotation Device). 安全第一.;只要在水边;孩子们都应该穿上救生衣
The major part of the operating cost of dissolved air flotation (DAF) lies in the cost of pumping the recycle stream through the saturation system. 气浮工艺中溶气效率高低直接影响到回流水量的大小,即决定着运行费用的高低。
The man, who has not been identified, is believed to be the first person to survive a drop over the falls without any life jacket or flotation device. 这个不明身份的男子被认为是世界上第一个没有借助任何救生衣和浮游装置跳入尼亚加拉瀑布后生还的人。
Abstract: The problems of air flotation process to remove algae in waterworks are summarized. The causes are dis-cussed and counter-measurements are suggested. 文摘:总结了自来水厂气浮除藻实践中存在的问题，并分析产生这些问题的原因，提出一些对策。
The refinery waste water is treated for recycle in the pilot plant by dissolved air flotation (DAF) bio-filtration, multi-media filtration, super filtration and reverse osmosis. 采用曝气生物滤池、多介质过滤、超滤、反渗透工艺,对炼油达标外排污水进行回用处理中试试验。
Mine impeller flotation machine for the self-absorption air flotation machine mechanical agitation for non-ferrous metals ferrous metals non-metallic minerals such as sorting. 矿用叶轮式浮选机为自吸空气机械搅拌浮选机用于有色金属、黑色金属、非金属等矿物的选别。
Mine impeller flotation machine for the self-absorption air flotation machine mechanical agitation for non-ferrous metals, ferrous metals, non-metallic minerals, such as sorting. 矿用叶轮式浮选机为自吸空气机械搅拌浮选机,用于有色金属、黑色金属、非金属等矿物的选别。
It is widely used in industrial waste water and city sewage treatment by Cavitation Air Flotation.But,It is still not be used in sludge treatment by Cavitation Air Flotation. 涡凹气浮已广泛应用于工业废水和城市污水的预处理中,但涡凹气浮在污泥处理中尚没有应用。
A stroller, for example, keeps a toddler safe at a crowded theme park; a Coast Guard-approved flotation device is literally a lifesaver for children around water. 例如：在一个拥挤的主题公园里用儿童车推着刚刚会走路的孩子才能保证安全，对于在水边玩的孩子来说，海岸警备认可的漂浮设备才是严格意义上的救生者。
The air flotation method of wax recovery commonly used in the actual mechanized wax printing mills was compared with the methods we used in our labs, such as hot water dewaxing, org. solvent extn., aq. surfactant recovery and dry dewaxing. 摘要将目前机械化蜡染厂采用的气浮回收蜡和我们实验室使用的热水脱蜡法、有机溶剂萃取回收法、水基表面活性剂乳液回收法及干法除蜡等方法比较，结果表明：热水脱蜡法是最适合机械化蜡染厂进行蜡的回收。
It is difficult to treat surface water with low turbidity, high color and abounding organic matter by coagulation, and coagulation and dissolved air flotation (DAF) process is used to treat this raw water. 低浊高色富含有机物地表水难于混凝,试验采用“混凝-溶气气浮”(“混凝-DAF”)工艺处理此类水,并与常规“混凝-沉淀”工艺进行了比较。
The air flotation method of wax recovery commonly used in the actual mechanized wax printing mills was compared with the methods we used in our labs,such as hot water dewaxing,org. 将目前机械化蜡染厂采用的气浮回收蜡和我们实验室使用的热水脱蜡法、有机溶剂萃取回收法、水基表面活性剂乳液回收法及干法除蜡等方法比较,结果表明:热水脱蜡法是最适合机械化蜡染厂进行蜡的回收。