The pond had recycle filter apparatus in which sand was biofield bed and air-pressed was powered.
并且对该鳖池的结构、滤床的熟化、再生、净化能力、应用管理做了初步的研究.
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She was sitting in a hospital bed, her plastered leg up in the air.
她坐在病床上,一条打了石膏的腿悬在空中。
《柯林斯高阶英汉双解学习词典》
建立了循环双流化床锅炉平衡通风风烟系统的数学模型,并对风烟系统的动态特性作了仿真研究。
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