电信专业英英词典L-1

 

　　LAN (IEEE 802.3 10BaseT)

　　LAN (Local Area Network) is an Institute of Electrical and Electronic Engineers specification¹ for a class of LANs using four-pair unshielded twisted pair (UTP) cable. See Local Area Network.

　　LAN

　　local area network

　　LATA

　　local access and transport area

　　LCR

　　least-cost routing

　　LDN

　　listed directory number; generally an organization's main telephone number that appears in the telephone book.

　　LDN

　　listed directory number

　　LEC

　　local exchange carrier

　　Line

　　See loop transmission facilities.

　　Local Access And Transport Area (LATA)

　　LATA is a geographic² area (called an "exchange" or "exchange area" in the MFJ) within each BOC's franchised³ area that has been established by a BOC in accordance with the provisions of the MFJ for the purpose of defining the territory within which a BOC may offer its telecommunications services. In 1989, there were 198 LATAs, also referred to as market service areas (MSAs), in the United States.

　　Local Area Network (LAN)

　　LAN is a premises⁴ high-speed (typically in the range of 10 Mbps) data communications system wherein all segments of the transmission medium (typically coaxial cable, twisted pair or optical fiber) are contained within an office or campus environment.

　　Local Channel

　　In LEC tariffs⁵, a local channel is the local loop that connects customer premises to serving LEC wire centers. In IXC tariffs, the network components⁶ (transmission, switching, other) used to connect customer premises to serving IXC POPs.

1 specification   

n.详述；[常pl.]规格，说明书，规范

参考例句：

• I want to know his specification of details.我想知道他对细节的详述。
• Examination confirmed that the quality of the products was up to specification.经检查，产品质量合格。

2 geographic   

adj.地理学的，地理的

参考例句：

• The city's success owes much to its geographic position. 这座城市的成功很大程度上归功于它的地理位置。 来自《简明英汉词典》
• Environmental problems pay no heed to these geographic lines. 环境问题并不理会这些地理界限。 来自英汉非文学 - 环境法 - 环境法

3 franchised   

v.给…以特许权，出售特许权( franchise的过去式和过去分词 )

参考例句：

• He is starting the first school himself,but subsequent ones will be franchised to use the Fujita method. 他已经自己开办了第一所学校，但是以后的学校将被特许使用富士达方法。 来自《简明英汉词典》
• Driving tests for franchised bus are held on request by bus companies. 专营巴士的驾驶考试只在巴士公司要求下才举行。 来自互联网

4 premises   

n.建筑物，房屋

参考例句：

• According to the rules,no alcohol can be consumed on the premises.按照规定，场内不准饮酒。
• All repairs are done on the premises and not put out.全部修缮都在家里进行，不用送到外面去做。

5 tariffs   

关税制度； 关税( tariff的名词复数 )； 关税表； （旅馆或饭店等的）收费表； 量刑标准

参考例句：

• British industry was sheltered from foreign competition by protective tariffs. 保护性关税使英国工业免受国际竞争影响。
• The new tariffs have put a stranglehold on trade. 新的关税制对开展贸易极为不利。

6 components   

（机器、设备等的）构成要素，零件，成分； 成分( component的名词复数 )； [物理化学]组分； [数学]分量； （混合物的）组成部分

参考例句：

• the components of a machine 机器部件
• Our chemistry teacher often reduces a compound to its components in lab. 在实验室中化学老师常把化合物分解为各种成分。