确保管子或其它圆柱形工具的内径合适，通过拖动已知外径的圆柱体或管子(清管器)穿行其中。
To guarantee the inside diameter of a pipe or other cylindrical tool by pulling a cylinder or pipe (rabbit) of known outside diameter through it.
内径千分尺、千分尺、塞规、螺纹规、数显卡尺、高度尺等检验工具。
Inside diameter micrometer micrometer plug gauge thread gauge digital calipers height gauge and other testing tools.
内径无阻碍的工具组合或管子组合的内部区域和表面的描述。
A description of the internal area and surfaces of a tool or tubular assembly through which there is an unimpeded internal diameter.
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