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来源:雅诚德英语网
The rest of the concept relied on gravity, which guaranteed that the surface of the molten metal was perfectly flat and horizontal.
其余的概念依赖于重力,它保证了熔融金属的表面是完全平坦和水平。
The rest of the concept relied on gravity, which guaranteed that the surface of the molten metal was perfectly flat and horizontal.
其余的概念依赖于重力,它保证了熔融金属的表面是完全平坦和水平。