Single plane mean bore diameter deviation.

单一平面平均内径偏差。

youdao

Thus by a simple machining operation on the face of the moulding the bore diameter is not disturbed.

这样在塑件的平面上作简单的修饰不会影响到塑件的使用。

youdao

Mean bore diameter: arithmetical mean of the largest and smallest single bore diameters in one plane.

平均内径：同一平面上最大和最小内径的算术平均值。

youdao

The men have been trapped in the desert copper-and-gold mine since an August 5 cave-in and are surviving on supplies funneled to them from above ground through three bore holes, each about 4 inches in diameter.

CNN: New video shows trapped Chilean miners in good spirits

Two bore holes -- each about 8 centimeters in diameter -- are currently being used to supply the miners.

CNN: STORY HIGHLIGHTS

The drill would use one of the three bore holes already made as a pilot and widen the diameter to about 28 inches, which officials have said is wide enough for the miners to be hoisted through.

CNN: New video shows trapped Chilean miners in good spirits