The total particulate matter (TPM) on Cambridge pad was extracted with CO-2 free water and the pH value of aqueous extraction was measured by pH meter.是什么意思_The total particulate matter (TPM) on Cambridge pad was extracted with CO-2 free water and the pH value of aqueous extraction was measured by pH meter.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句