Electron-beam parametric amplifier

electron [i'lektrɔn]

n. 电子;

beam [bim]

n. 梁，栋梁;束;光线;（电波的）波束; vi. 发出光与热;面露喜色; vt. 播送;以梁支撑;用…照射;流露; vt.& vi. 笑容满面，眉开眼笑;发射电波，播送;放出束状的光（或热）;

parametric

a. 参数的, 参量的\\n[医] 子宫旁的

amplifier ['æmplɪfaɪɚ]

n. 扩音器;放大器;扩大的人;详述者;

ampli=amplify扩音+fier人或物 →扩音器

I never could tie one of those ...

我从来就不会打那一类的……

I wrote to my uncle last night.I couldn't put it off any longer.

我昨晚给我的叔叔写了信.我不能再推迟寄信了。

when they would be capable of providing information about traffic jams and suggesting alternative routes, when they would be used in hospitals to help doctors to diagnose illnesses, when they would relieve office workers and accountants of dull, repetitiv

计算机可以使办公室人员和会计免除那些枯燥、重复的劳动。