沒超越物理極限吧∼
現在德國人不是造出了更大的挖礦機，我記得Discovery有介紹的。
http://www.amazingpics.co.tv/2010/0...a-machines.html
built by the German company, Krupp
Specifications:
~ The mover stands 311 feet tall and 705 feet long.
~ It weighs over 45,500 tons
~Cost $100 million to build
~ Took 5 years to design and manufacture
~ 5 years to assemble.
~ Requires 5 people to operate it.
~The Bucket Wheel is over 70 feet in diameter with 20 buckets,
each of which can hold over 530 cubic feet of material.
~ A 6-foot man can stand up inside one of the buckets.
~ It moves on 12 crawlers (each is 12 feet wide, 8' high and 46 feet long). There are 8 crawlers in front and 4 in back. It has a maximum speed o...