首页
登录
职称英语
In the early 1950s the researchers who produced the first clad glass optical
In the early 1950s the researchers who produced the first clad glass optical
游客
2023-10-18
27
管理
问题
In the early 1950s the researchers who produced the first clad glass optical fibers were not thinking of using them for communications.【C1】H______, fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham,【C2】______ (claim)the use of low-loss optical fibers for communication, appeared in 1966. The first low-loss silica fiber was described in【C3】______which appeared in October of 1970. The date of this publication is sometimes【C4】______(cite)as the beginning of the era of fiber communication. Although this development did receive【C5】______(consider)attention in the research community at the time, it was far from inevitable that a major industry would evolve.
The technological barriers appeared formidable because there were serious doubts as to【C6】wh______these fiber components could ever be produced economically enough, but the market potential was very significant.【C7】______(consequence), research and development activity expanded rapidly, and a number of important issues were【C8】re______during the early 1970s. During the middle and late 1970s, the rate of progress towards marketable products accelerated as the emphasis【C9】______(shift)from research to engineering. Fibers with losses【C10】app______the Rayleigh limit of 2 dB/km at a wavelength of 0. 8 μm were produced.
By 1980 improvement in component performance, cost, and reliability led to major commitments on the part of telephone companies. [br] 【C5】
选项
答案
considerable
解析
此处需要形容词形式修饰名词attention。considerable attention相当多的关注。此句可译为:尽管当时这项技术在研究领域确实引起了极大的关注,但要发展成一个重要产业还相差甚远。
转载请注明原文地址:https://tihaiku.com/zcyy/3107865.html
相关试题推荐
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Ofallthegoalsoftheeducationreformmovement,noneismoredifficultth
A.腹腔镜 B.剖腹探查 C.中药 D.刮宫 E.缩宫素静滴对急性宫外孕
混响伪像产生的条件,下列最正确的是A.增益灵敏度调节过高 B.时间增益补偿(T
采用一般计税方法等,关于施工机械台班单价和仪器仪表台班单价的相关子项扣除增值税,
下列属于继受取得的有( )。A.买卖合同 B.赠与 C.受遗赠 D.拾得遗
某投资者预通过蝶式套利方法进行交易。他在某期货交易所买入2手3月铜期货合约,同时
期货交易清算价即每个营业日的收盘前()秒或()秒内成交的所有交易的价
Thechangeinthatvillagewasmiraculou
从统计图中我们可以得出()。 Ⅰ.2006年1-10月份中国固定资产投资
110kV及以下供配电系统的设计,为减小电压偏差可采取下列哪些措施?()A.正
最新回复
(
0
)