1.
a growing realization of the risk involved; a sudden consciousness of the problem he faced.
经过一个月的埋头钻研,他对事情有了更深的领悟。
2.
To drive(a screw or bolt)into a countersink.
将钻或螺栓置入埋头孔
3.
Those who immerse themselves in scientific research and work at it doggedly should be encouraged.
有的人一头钻到科研里面埋头苦干，应当鼓励。
4.
A hole with the top part enlarged so that the head of a screw or bolt will lie flush with or below the surface.
埋头孔顶部扩大的孔，为使钻或螺栓的头与地面相平或在地面以下
5.
unit-type drill head
组合钻床钻头, 标准钻头
6.
drill(ing) head
钻头; 主轴头; 钻床床头箱; 钻削动力头;钻头头部, 钎头
7.
part of a drill that grips the bit
夹头（钻或钻床上用以夹住钻头的部分）.
8.
a small bit that drills a first hole to guide a larger drill.
钻凿初洞来导引大钻头的一种小钻头。
9.
A Dutch diamond cutter was busy at his craft while the car twisted its way down some pretty bumpy roads.
当汽车在一条相当崎岖不平的道路拐来拐去时，一名荷兰的钻石加工技师竟在埋头干他的手艺。
10.
He flung himself on [into] his work.
他投入 [埋头] 工作。
11.
sunk screw
【机】埋[沉]头螺丝
12.
easing the bit in
钻头轻压慢转钻进地层
13.
A tool used for drilling.
钻头用于钻孔的工具
14.
a bit used in drilling for oil.
油田钻井使用的钻头。
15.
A pointed and threaded tool for drilling and boring that is secured in a brace, bitstock, or drill press.
钻头曲柄、钻柄或钻床之上用于钻孔的尖头工具
16.
counterbore for hexagon socket head bolt
内六角头螺栓埋头孔
17.
eggbeater PDC bit
打蛋器型PDC钻头
18.
Drilling is cutting a hole with a drill.
钻削就是用钻头钻一个孔。