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unipolar analog signal
单极类比信号
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unintentional adj. 非故意的;无意识的
existence n. 存在,实在;生存,生活;存在物,实在物
pairing n. 配对;摞合;[机] 双层轧制
beach n. 海滩;湖滨 vt. 将…拖上岸 vi. 搁浅;定居 n. (Beach)人名;(英)比奇
saddler n. 马具商,制造马鞍的人;乘坐用的马
cataloguing n. 目录表;编目组 vt. 为…编目;按目录分类(catalogue的现在分词)
seized v. 逮住;咬住(seize的过去分词) adj. 查封的
as conj. 因为;随着;虽然;依照;当…时 prep. 如同;当作;以…的身份 adv. 同样地;和…一样的
spendthrift n. 挥霍无度的人;浪费的人 adj. 挥霍无度的;浪费的
bifocal n. 双光眼镜;双重焦点透镜 adj. 双焦的;双焦点的
scutter n. 疾走 vi. 急跑;疾走
toffee n. 乳脂糖,太妃糖
fusty adj. 发霉的;守旧的,老式的
hunchback n. 驼背
cartography n. 地图制作,制图;制图学,绘图法
ursula n. 厄休拉(女子名)
disclaimer n. 不承诺,免责声明;放弃,拒绝
anguished adj. 极度痛苦的 v. 使极度痛苦(anguish的过去式)
ALDINGTON 奥尔丁顿(①姓氏 ②Richard, 1892-1962, 英国诗人、小说家、作曲家)
uneconomic adj. 不经济的;浪费的
考试词汇表
drive the nail up to the head
driven well (Abyssinian well)
driver foundation engineering
driver with explosion chamber
driver's tool and accessories
driverless industrial tractor
driving & reversing machanism
driving and withdrawing piles
driving gear bush speedometer
driving on snowy and icy road
driving wheels of locomotives
drooping of the upper eyelids
drop bracket type disposition
drop buckets into empty wells
drop characteristic dimension
drop sth. like a hot chestnut
drop the kids off at the pool
dropping auger conveyor board
dropping incidence of disease
dropping-speed characteristic