|
Since the 1980?s, the movement against driving under the influence has steadily grown in public areas awareness through both social campaigns as well as in the ever-tightening strictures in the law. Spearheaded by such groups as Mothers Against Drunk Driving, the push for greater individual responsibility and increased intervention by friends (the notion of ?taking away the keys?) has experienced tangible consequences on our cultural approach to this habit.
Spacecraft flew hundreds of thousands to hundreds of millions of kilometers from the earth, injecting speed when the size and direction of a slight error, arrived at target planets will appear large deviation error, for example, when Mars probe injecting speed 1 m/s speed (about one over ten thousand), arrived at Mars, about 100000 km distance deviation. Therefore, precise control and navigation must be carried out during the long flight. Flying to the moon is usually controlled by the orbital control system of the ground and space probe (see orbit control). Interplanetary flight distances, radio signal transmission time is long, the real-time remote control, can't so planets and interplanetary spacecraft orbit control system shall have the ability of autonomous navigation (see interstellar travel navigation and control). The United States, for example, "pirates" spacecraft in space flight of more than eight hundred million km, for 11 months of 2000 times of autonomous orbit adjustment, the final surface to achieve a soft landing on Mars, placement accuracy up to 50 km. In addition, in order to ensure the accuracy of the orbit control engine, the communication antenna is always aimed at the earth, and other systems work normally, and the detector has the autonomous attitude control ability
Germany is the world's first international auto show. The Frankfurt motor show, formerly known as the Berlin motor show, was founded in 1897 and moved to Frankfurt in 1951, with a rotation of cars and commercial vehicles each year. The Frankfurt motor show is the world's largest auto show and is known as the "motor Olympics". The Frankfurt international motor show, which is held every two years, is normally scheduled for about two weeks in mid-september. The exhibitors are mainly from Europe, the United States and Japan, especially European auto dealers. Frankfurt is in Germany and the main character is German business, which seems to be the same as the regional nature of the Detroit auto show and the Tokyo motor show. Germany is the birthplace of hyundai motor, the home of mercedes-benz, Volkswagen and audi, and the Frankfurt motor show is a great opportunity for them to strut their stuff
New Car Buying Tips--



Copyright ?1998-2017 Technews Corp, All rights reserved
|
