When Alexander Graham Bell invented the telephone in 1876, he probably didn’t imagine how far it would come over the next century and a half. In 1919, the American Bell Telephone Company launched national service for rotary dial phones, the first mass-produced phone controlled by the user....
To stay in touch with her, he connected metal cables between their home and his workshop, creating a rudimentary telephone system. While Meucci demonstrated his invention to a small group, he never applied for a patent. Alexander Graham Bell, working on a similar idea, was granted the paten...
a根据最近的一项统计调查显示,85%的人在近距离旅行的时候首选的交通工具是自行车。 Demonstrated according to a recent statistical investigation that, 85% person in the short distance travel time first choice transportation vehicle are the bicycle.[translate] ...
We conceived the project as a large-scale partnership, the EMIS Network. Our development process ensured we had a national lead for the promotion and/or a national lead for data analysis in almost all the countries included in the survey. Each step of the design process engaged with the EMI...
According to the investigation demonstrated that, now the majority of children all are not willing to communicate with the parents, the more child choice and the friend face-to-face chat, keep a diary, the net chats these to chat the way to pour out.[translate] ...
Scottish inventor John Lodgie Baird demonstrated the first working television that used cathode ray tubes to mechanically scan pictures displayed on the screen. Called CRTs, they remained wildly popular until the 21st century, when LCD and other electronic displays outpaced them. Sony shut down CRT...
The association between early use and increased risk for psychiatric illnesses has been demonstrated in the literature.24 Another important finding was the association of problem behaviors related to cocaine/crack use. Statistically significant associations were observed in all six assessed behaviors among ...
Meucci first demonstrated his invention in the United States at Staten Island, New York in 1854. He claimed to have invented the paired electromagnetic transmitter and receiver that used the motion of a diaphragm to modulate a signal in a coil through the movement of an electromagnet; however, ...
Enters the routine measurement, aims at the repetition profile generally the survey.When uses the automatic survey, shows the wave table automatic selection appropriate scanning time base, the input scope control and the triggering condition, demonstrated the multi-cyclical stable profile, simultane[trans...
First, the brand can strengthen the bank service adjustment the direction.The brand had the localization function, the brand has first demonstrated the bank product service attribute and the function characteristic.The customer can make personalized according to the brand information the choice.Espe[tran...