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to phrases
step-index
el.
阶跃折射率
step index
adv.
打索引
;
打梯级
oil
步长指数
space
阶跃折射率
telecom.
突变折射率
step-index
:
28 phrases
in 8 subjects
Agriculture
1
Electronics
11
Information technology
4
Oil / petroleum
1
Space
2
Technology
5
Telecommunications
3
Textile industry
1
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