- CP - Portuguese Railway Company WORK PERFORMED: Construction inspection of 30 double floors wagons, PORTUGAL.
- In double floors, its own ceiling joists or bearers carry the ceiling of the room below.
- Characteristic:Working chamber has double floors sharking flat roof,and also can change single floor, which is satisfy with large triangle flask.
- Working chamber has double floors sharking flat roof,and also can change single floor, which is satisfy with large triangle flask.
- Construction of single tube double floor subway tunnel
- Improvement of tobacco feeding method in double floor cut-rag silo
doubleness double double-pipe heat interchanger double-membrane autophagosome double side band sign generator Double-Based Solid Propellant double pole double throw switch double-bilinear interpolation double-sided loop pile fabric double-acting napping machine double-exposure inteferometry double room with private toilet