The dial shall be made of copper aluminum alloy, inalterable black numerals and graduation on white background. The manufacture of same will be to applicable standards.
刻度盘应机械指针式,应选用铜铝合材质,底白,上面标数字和刻度(不易褪),刻度分配应采用厂家提供标准。
The dial shall be made of copper aluminum alloy, inalterable black numerals and graduation on white background. The manufacture of same will be to applicable standards.
刻度盘应机械指针式,应选用铜铝合材质,底白,上面标数字和刻度(不易褪),刻度分配应采用厂家提供标准。
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