您要查找的是不是：
- 类GPSQuasi-GPS
- 类GPS测距"GPS-like" ranging
- 类GPS测距技术'GPS-like' ranging
- 类GPS超声定位系统及其定位精度分析Quasi-GPS ultrasonic ranging system and its location precision analysis
- 类GPS超声定位系统及其单基站距离估计算法Research on Single Base-Station Distance Estimation Algorithm in Quasi-GPS Ultrasonic Location System
- 胺类amine
- 聚类分析cluster analysis
- 灵长类Primates
- 果类fruit
- 类项category
- 布类mercery
- 第一类first kind
- 蔬菜类greengrocery
- 脂类FAT
- 小类subclass
- 抽象类abstract class
- 醇类alcohols
- 酚类phenols
- 物以类聚，人以群分
- 类化apperception
