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Terms containing
second backcross generation
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Subject
English
Chinese
agric.
first,second,third,backcross generation
B
1
,B
2
,B
3
第一,第二,第三回交子代
anim.husb.
second backcross generation
第二回交子代
anim.husb.
second backcross generation
回交二代
sel.breed.
second backcross generation
第二回交世代
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