The hole diameter has little effect on the efficiency.
孔径对效率影响不大。
Look at the hole diameter now more air can pass thru and less noise.
看看现在孔径可以通过空气和噪音。
Enough rice to plug a three-inch diameter hole.
够塞进直径3英寸洞中的大米。
Dig a hole, about twice as large as the diameter of the flower's pot.
挖一个洞，洞的大小约是花盆的直径的两倍大。
Check if the diameter and length of anchor hole accord with this chart.
检查机床基座孔直径、长度是否符合。
The long axis diameter processing, need to resist center hole;
加工长轴外径时，需顶住中心孔；
The long axis diameter processing, need to resist center hole;
加工长轴外径时，需顶住中心孔；
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