作业帮怎样用英语介绍mobilephone
来源：学生作业帮 编辑：作业帮 分类：英语作业 时间：2024/05/15 14:48:59
怎样用英语介绍mobilephone
A mobile phone (also known as a cellular phone,cell phone and a hand phone) is a device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area.It does so by connecting to a cellular network provided by a mobile phone operator,allowing access to the public telephone network.By contrast,a cordless telephone is used only within the short range of a single,private base station.
In addition to telephony,modern mobile phones also support a wide variety of other services such as text messaging,MMS,email,Internet access,short-range wireless communications (infrared,Bluetooth),business applications,gaming and photography.Mobile phones that offer these and more general computing capabilities are referred to as smartphones.
The first hand-held mobile phone was demonstrated by Dr Martin Cooper of Motorola in 1973,using a handset weighing around 2.2 pounds (1 kg).[1] In 1983,the DynaTAC 8000x was the first to be commercially available.From 1990 to 2011,worldwide mobile phone subscriptions grew from 12.4 million to over 5.6 billion,penetrating about 70% of the global population [2] and reaching the bottom of the economic
In addition to telephony,modern mobile phones also support a wide variety of other services such as text messaging,MMS,email,Internet access,short-range wireless communications (infrared,Bluetooth),business applications,gaming and photography.Mobile phones that offer these and more general computing capabilities are referred to as smartphones.
The first hand-held mobile phone was demonstrated by Dr Martin Cooper of Motorola in 1973,using a handset weighing around 2.2 pounds (1 kg).[1] In 1983,the DynaTAC 8000x was the first to be commercially available.From 1990 to 2011,worldwide mobile phone subscriptions grew from 12.4 million to over 5.6 billion,penetrating about 70% of the global population [2] and reaching the bottom of the economic