人工智能 模式识别 释文 principal component analysis, PCA 主成分分析
- ultrabornological
- ultrabornological space
- ultraboundedness
- ultra bright
- ultra broadband seismometer
- ultracentrifugal
- ultra-centrifugal sedimentation
- ultracentrifugation
- ultracentrifuge
- ultracharacteristic subgroup
- ultrachromatography
- ultra-clean and high-purity electronic specific gas
- ultra-clean and high-purity reagents
- ultra-clear glass
- ultraclosed
- ultracold molecule
- ultracold neutron
- ultra-compact dwarf galaxy
- ultracompact galaxy nucleus
- ultracompact HⅡ region
- ultraconvergence
- ultracrystallite
- ultradeep-field observation
- ultra-deep well fracturing
- ultradense neutron star