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单词
keto acid
释义
keto acid
[`kēd·ō ´as·ǝd]
ORGANIC CHEMISTRY
A compound that is both an acid and a ketone; an example is β-acetoacetic acid.
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uns-, unsym-
unsurveyed area
untuned
unused time
unwater
unwind
up
up-and-down method
upcast
up-converter
update
update service
up-Doppler
updraft carburetor
updraft furnace
updrift
upflow
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