11. One of the largest observed domain motions is the'swivelling 'mechanism in pyruvate phosphate dikinase. 12. The tow-ball is popular for lighter loads, readily allowing swivelling and articulation of a trailer. 13. The original plans were introduced in 1833 for a conventional bridge with a swivelling section in the middle. 14. Close behind was the observer's cockpit, fitted with a mounted pair of swivelling machine guns. 15. The casing has a swivelling midsection incorporating the appendage boxes, providing a 360-degree field of fire. 16. Unlike the " 21 ", they also had an American-style swivelling damper like Ludwig's. 17. Shoring'push and pull'props with swivelling footplates are available and are used to support concrete formwork. 18. She estimates there are well over 1, 500 gyrating, hip-swivelling Elvis clones scattered around the country. 19. The gunner has two observation periscopes, a telescopic sight and a one-piece lifting and swivelling hatch cover. 20. The G 4 / 5 was a four coupled tender locomotive with a leading axle in a swivelling pony truck.
