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词汇
PD
释义
PD
abbr.
1.
=postdate(d)
2.
=postage due
3.
=pitch diameter (螺纹的)中径; (齿轮的)节径
4.
=pulse duration 脉波持续时间, 脉波宽度
随便看
buteo
but for
butler
butler's pantry
butlery
butt
butt
butte
butter
butter-and-eggs
butterball
butter bean
butterbur
buttercream
buttercup
butterfat
butterfingered
butterfingers
butterfish
butterfly
butterfly effect
butterfly nut
butterine
butter knife
buttermilk
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