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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
Fiber Optic Emitters
fiber optics
Fibonacci Number
Fibonacci Search
Fibonacci Series
fibr-
fibre
fibre board
fibre-board
fibreboard
Fibre Channel
fibre optics
fibriform
fibril
fibrillar
fibrillation
fibrillose
fibrin
fibrination
fibrinogen
fibrinolysis
fibrinous
frictional unemployment
friction cost
friction tape
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