“rotary bucket”的概念、定义、翻译、参考文献-科学参考

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.
随便看	four laws of black hole mechanics four-layer device four-layer diode four-layer transistor four-level laser fourmarierite four-phase modulation four-pi counter four-piece set four-plus-one address four-point four-point bearing four-pole double-throw four-quadrant multiplier fourré four-stroke cycle four-tape fourth dimension fourth-generation computer fourth-generation language fourth-power law fourth proportional fourth quadrant fourth sound four-track tape

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