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graded-index
el. 梯度折射率
tech. 缓变折射率
graded index
el. 缓变折射率
space 渐变折射率; 梯度折射率
graded-index: 61 phrases in 12 subjects
Agriculture1
Aviation1
Communications1
Electronics18
Geophysics1
Information technology5
Polymers2
Rail transport1
Securities1
Space3
Technology22
Telecommunications5

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