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
2024-08-17
53
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.【46】H______, fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham,【47】______ (claim) the use of low-loss optical fibers for communication, appeared in 1966. The first low-loss silica fiber was described in【48】______which appeared in October of 1970. The date of this publication is sometimes【49】______(cite) as the beginning of the era of fiber communication. Although this development did receive【50】______ (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【51】 wh______these fiber components could ever be produced economically enough, but the market potential was very significant.【52】______(consequence) , research and development activity expanded rapidly, and a number of important issues were【53】re______during the early 1970s. During the middle and late 1970s, the rate of progress towards marketable products accelerated as the emphasis【54】______(shift) from research to engineering. Fibers with losses【55】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]
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/3724070.html
相关试题推荐
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Theoceanbottom--aregionnearly2.5timesgreaterthanthetotallandarea
Therewassnoweverywhere,sothattheshapeofthingswasdifficulttoA、identif
Toachorusofangryshoutsandinsults,a【C1】______(wealth)Chicagocouple
Inadditiontotheiracademicwork,childrenintheUnitedStatesareoffere
呼吸性酸中毒时A:PaCO2↑B:PaCO2↓C:肺过度换气D:肾脏排出氢
Thechangeinthatvillagewasmiraculou
物业装饰装修管理流程一般包括的内容有:①申报登记;②备齐资料;③办理开工手续;④
下列工程施工放样产生的误差中,不属于观测误差的是( )。A.估读误差 B.整
伤寒小结一般不发生在A.回肠 B.骨髓 C.肝脏 D.脾脏 E.胆囊
骨肉瘤可见到A.局部肿块,无触痛,多偶然发现 B.表面静脉怒张 C.多发生于
最新回复
(
0
)