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Math & Engineering
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面
积
miàn
jī
surface area
三
角
sān
jiǎo
triangle
偏
差
piān
chā
bias, deviation
公
式
gōng
shì
formula
垂
直
chuí
zhí
perpendicular, vertical
平
面
píng
miàn
plane (flat surface), print media
引
擎
yǐn
qíng
engine (transliteration)
弦
xián
bow string, string of musical instrument
总
和
zǒng
hé
sum
机
械
jī
xiè
machine, machinery, mechanical