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保长对应
保長對應
bǎochángduìyìng
1. (math.) distance-preserving correspondence
2. isometry

Character Breakdown

保
bǎo
to safeguard, to protect, to defend, to care for
HSK 4 9 丶
长
zhǎng
long, lasting; to excel in
HSK 2 4 丶
对
duì
correct, right; facing, opposed
HSK 1 5 丶
应
yīng
should, must; to respond, to handle; to deal with, to cope
HSK 3 7 丶

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Chinese