TETHMP was prepared by one-step synthes is of triethylene tetramine,formaldehyde and phosphorus trichloride.The yield was about 80%.是什么意思_TETHMP was prepared by one-step synthes is of triethylene tetramine,formaldehyde and phosphorus trichloride.The yield was about 80%.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句