单词 | rotary bucket |
释义 | rotary bucket [`rōd·ǝ·rē `bǝk·ǝt] MECHANICAL ENGINEERING A 12- to 96-inch-diameter (30- to 244- centimeter) posthole augerlike device, the bottom end of which is equipped with cutting teeth used to rotary-drill large-diameter shallow holes to obtain samples of soil lying above the groundwater level. |
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