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
36
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/3107445.html
相关试题推荐
Icebergsareafavoritesubjectforphotographersbecauseof______producedbyth
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
Intheearly1950stheresearcherswhoproducedthefirstcladglassoptical
随机试题
Cultureisactivityofthought,andreceptivenesstobeautyandhumanefeeli
DothefollowingstatementsagreewiththeinformationgiveninReadingPassage
组织上的独立性只有当首席审计执行官在职能上向董事会报告的情况下才能够有效实现。职
含挥发油类药材,水制时应() A漂洗 B淋洗 C抢水洗 D少泡多润
在房地产区位状况描述中,说明有无停车场、车位数量、到停车场的距离等描述,属于(
目前,我国银行开办的外币存款业务的币种有( )。A.新加坡元 B.英镑 C
下列关于公开招标与邀请招标的说法中,不正确的是()。A:公开招标以发布公告的方式
投资项目决策分析与评价的基本要求包括贯彻落实科学发展观、资料数据准确可靠和()
(2018年真题) 【背景资料】 某写字楼工程,建筑面积8640m2,建筑
下列常用光源中平均使用寿命最长的是()A.白炽灯 B.碘钨灯 C.氙灯 D
最新回复
(
0
)