big pipe fence的用法和样例：
- Measure the inner and outer diameter of big pipe.
- Skylab was like a big pipe, or tube, with two levels.
- Now I'm guessing that he bought her the big pipe organ, and she's really not happy about it.
- It has certain difficulties to perform pipeline pressure testing and drying because of com-plicated and variable topography and landform,long distance,big pipe diameter and high pressure.
- The condition applying big pipe pile of concrete to Shantou Port was introduced and the inquiy on the standard and the technical measures for stopping hamer of piling were made in the paper.