The falling water level denoted the passing hour as it dipped below hour lines inscribed on the inner surface.
当下降的水位低于内表面刻下的小时线,表示经过了多少时间。
The inner surface at one end of metal insert is cone-shaped sealing surface.
上述金属嵌件一端部的内表面为锥形的密封面。
The tool is a rectangular framework that the inner surface of a vertical array of grooves.
该模具为一矩形框架,该框架的内表面设有纵向排列的凹槽。
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