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
14
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://www.tihaiku.com/zcyy/3108979.html
相关试题推荐
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
WelcometoLondon!Withover80stops,3mainsightseeingroutesandcountle
《谈时间》主要论述()A.时间的作用 B.要挽住时光的流逝 C.如何去打
下述关于中国证券投资基金业协会的法律属性说法正确的是( )。A.中国证券投资基
投资部按照投资标的可以细分为()。 Ⅰ.权益部 Ⅱ.债券部 Ⅲ.衍
甘草药材的性状特征是A.表面红棕色或灰棕色,皮孔横长,断面黄白色,粉性,可见形成
按照“运检部牵头、按部门管理、分层负责”的原则,开展变电站现场运行规程编制、修订
制定招标采购计划时,为合理确定标段划分方案,应考虑的因素包括()。A.时间及空
糖酵解途径所指的反应过程是( )。A.葡萄糖转变成磷酸二羟丙酮 B.葡萄糖转
会计职业道德与会计法律制度的联系表现为()。A:两者性质相同B:两者在作用上相
38岁初产妇,在家中经阴道自然分娩,胎儿、胎盘娩出。因时多时少的阴道持续流血1小
最新回复
(
0
)