那么，什么是4G呢——简单的来说，4G这个名字没有什么含义，只不过是第四代手机通讯技术的简称。
As for what 4G is — basically, there's nothing simple about 4G expect for the name, which refers to fourth generation cell phones.
这就是移动通讯业界所说的“虚拟手机网络运营商”(Mobile Virtual Net work Operator)，简称MVNO。
This is known in the industry as a "mobile virtual network operator", or MVNO.
目的探讨过氧化氢等离子低温灭菌对牙科高速涡轮手机（简称手机）的灭菌效果及对手机的损耗情况，以增加手机的使用寿命。
Objective To explore the effects and damages of low-temperature sterilizing with hydrogen peroxide gas plasma (HPGP) on dental high speed turbine handpieces, so as to prolong its service life.
简称：中国电信称，计划增加新的智能手机，并加大投入，力图在中国这个全球最大的手机市场发展壮大。
China's largest fixed-line operator by subscribers, said it plans to add new smart phones and increase capital spending as it tries to gain ground in the world's biggest mobile market.
简称：中国电信称，计划增加新的智能手机，并加大投入，力图在中国这个全球最大的手机市场发展壮大。
China's largest fixed-line operator by subscribers, said it plans to add new smart phones and increase capital spending as it tries to gain ground in the world's biggest mobile market.
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