定义为群折射率(group index),一个常用的 光学参数。 色散介质:在该介质中传输的光波,相速度 与群速度均与波长有关,即材料色散, 这种介 质称作色散介质。
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Target Group Index 目标群体指数 ; 目标用户集中度 ; 群体指数 ; 指标
code group index 代码组索引
group-index 分层指数
group index of refraction 群折射率
Effective Group Index 有效折射指数
group index number 分类指数 ; 分组指数
methylol group index 羟甲基指数
orientating group index 定位基指数
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Every index in dicynone group had no significant difference from that in control group.
用止血药组与对照组之间的各项指标无显著差异。
Each group consisted of 5000 users; for each user the index and All Documents view were built.
每组都由5000个用户组成;为所有用户都构建了索引和全部的文档视图。
The third column is a numeric index for the group.
第三列是组的一个数字索引。
Liberia ranks 138 on the 180-nation corruption index established by the good-governance group Transparency International.
VOA: standard.2009.08.14
After rising steadily for more than a year, the index of leading economic indicators actually slipped by .1 percent in April, according to a private research group.
VOA: standard.2010.05.20
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