您要查找的是不是：
- 半消失差物镜fluorite lens
- 聚光器optical collector
- 消失disappear
- 消球差聚光器aplanatic condenser
- 一种可用于太阳能抽运光纤激光器的聚光器A solar concentrator in the solar-direct-pumped fiber laser system
- 方差variance
- 差分difference
- 聚类clustering
- 标准差root-mean-square error (RMS error)
- 逐渐消失graduate away
- 聚糖polysaccharide
- 差一点by a finger's breadth
- 聚四氟乙烯polyfluortetraethylene
- 差的inferiors
- 台下聚光器substage condenser
- 很差no chop
- 重聚reunion
- 不差little short of
- 物以类聚birds of a feather flock together
- 差旅travel
