人工智能 模式识别 释文 principal component analysis, PCA 主成分分析
- spiral molding
- spiral nebula
- spiral of Archimedes
- spiral of silence theory
- spiral of uniform velocity
- spiral orbit
- spiral pattern
- spiral pipe drainage system
- spiral point
- spiral potential
- spiral prismatic dislocation
- spiral ramp development
- spiral sampling design
- spiral similarity
- spiral sluice
- spiral structure
- spiral surface
- spiral test
- spiral tracer
- spiral track
- spiral vessel
- spiral water wall tube
- spiral wave
- spiral waves in excitable system
- spiral zooid