Principal component regression (PCR) method is used to analyse monocyclic and polycyclic aromatic hydrocarbons in white oil.The computer program of PCR is based on VB language.是什么意思_Principal component regression (PCR) method is used to analyse monocyclic and polycyclic aromatic hydrocarbons in white oil.The computer program of PCR is based on VB language.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句