这些无孔的表面很难以刷子上漆。
全球化无孔不进,这种现象反映在建筑上尤为突出。
The globalization seizes every opportunity, this kind of phenomenon reflects in construction outstandingly.
介绍了铜合金在渗剂粉末中高效渗硅,获得无孔的渗硅层。
A siliconized nonporous layer on copper alloy may be obtained by efficient siliconizing in powder mixtures.
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