The shortcomings of horizontal centrifugal casting machine are analyzed, and a vertical casting unit in structure of double-layered hollow abdomen is designed.
文章分析了卧式离心铸造机的不足，并针对这些不足，设计了一种双层空腹主轴结构的立式离心铸造机。
The double-layered structure was beneficial for oxygen diffusion and water removal, and thus improved the DMFC performance.
该双催化层阴极结构有利于氧气扩散和水的排出，提高了电池性能。
The double-layered structure was beneficial for oxygen diffusion and water removal, and thus improved the DMFC performance.
该双催化层阴极结构有利于氧气扩散和水的排出，提高了电池性能。
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