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单词
rope sheave
释义
rope sheave
[`rōp ´shēv]
DESIGN ENGINEERING
A grooved wheel, usually made of cast steel or heat-treated alloy steel, used for rope drives.
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pay streak
pay television
pay zone
Pb
P band
PBI
Pb-I-Pb junction
PBI test
p-block elements
P blood group
P-branch
PBX
PC
PCA
PCB
p-channel metal-oxide semiconductor
p chart
PCM
PCNB
PCP
PCR
PCSB
P Cygni star
PD
Pd
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