Specially designed for the manufacture of a drill, boringmachine in a position to achieve two of the dedicated machine.
专门设计了制造一个将钻、镗孔在一台机床上实现的两个工位的专用机床。
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A subway construction worker, known as a "sandhog" exits the tunnel boringmachine in the northbound tunnel of the Second Avenue subway construction project, Thursday, April 7, 2011 in New York.
The directional braking return of the boringmachine after the boring process finished is the key for improving the machining quality and working efficiency.