The earth all things recovery, the grass from the earth drill out, this is the spring's eyebrows.
大地万物复苏，小草从土里钻出来了，这是春天的眉毛。
Sometimes he sends is drill more than a mile into the earth.
有时他得把钻头钻入地下一英里深。
An analysis related to various kinds of soil cutting by earth auger, this paper puts forward that running speed of frill should be faster than critical speed so as to increase the efficiency of drill.
通过分析长螺旋钻机在切削各类土质时，钻具的角速度与土块运动机理关系，提出确定钻具临界的方法，而工程施工中钻杆的实际转速应大于临界转速，以提高钻机的工作效率。
Mom: because the earthworm younger brother will drill the earth, the earth will protect him!
妈妈：因为蚯蚓弟弟会钻土，大地会掩护他啊。
The paper mainly introduces the design method of power supply and earth-leakage circuit for the electric-coal-drill integrated unit.
本文主要介绍煤电钻综合装置电源与漏电保护电路的设计方法。
The paper mainly introduces the design method of power supply and earth-leakage circuit for the electric-coal-drill integrated unit.
本文主要介绍煤电钻综合装置电源与漏电保护电路的设计方法。
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