solvent adj. 1.有溶解力的,可溶解的;〔比喻〕使(信仰等)瓦解[削弱]的 (of)。 2.有償付能力的。 n. 1.【化學】溶劑,溶媒 (of for)。 2.解釋,說明。 3.使瓦解的東西。 solvent action 溶解作用。 Water is the commonest solvent. 水是最普通的溶劑。 Alcohol is a solvent of resinous substances. 酒精是樹脂性物質(zhì)的溶媒。 science as a solvent of superstition 作為破除迷信手段的科學。
ratio n. (pl. ratios) 1.比,比率,比值;比例;系數(shù)。 2.【經(jīng)濟學】復本位制中金銀的法定比價。 the ratio 3:2 (讀作 the ratio of three to two )3對2之比。 arithmetical ratio 公差,算術(shù)比。 direct ratio 正比。 inverse [reciprocal] ratio反比。 current ratio 電流比,電流變換系數(shù)。 nutritive ratio 營養(yǎng)率。 vt. 1.用比例方式表達;求出…的比值;使…成比例。 2.將(相片)按比例放大或縮小。
At 70c , dissolved time 60min , solvent ratio 125 : 50ml / g , the effect of benzene is best to separating phenanthrene of crude anthracene , phenanthrene content of crude anthracene is increased from 10 . 3 % to 41 . 7 % . at 120c , dissolved time 80min , the solvent ratio 75 : 30ml / g , the effect of dmf is best to separate carbazole from the compound of anthracene and carbazole , and in the high or common temperature when the compound is separated the solid content may be seen that anthracene content is almost . so , the common temperature is selected in the filtration of the experiment 苯在70 ’ c 、溶解時間60min 、溶劑比125 : 5oml / g ,對分離粗蔥中菲的效果最好,可以使粗蔥中菲的含量從10 . 3 %提到41 . 7 % 。 dmf在120 ’ c 、溶解時間somin 、溶劑比75 : 30ml / g時,對分離蔥和咔哇混合物中咔哇的效果最好,并且從高溫和低溫下分離后得到固體含量可以看出,在這兩個溫度下過濾得到蔥的含量差不多,因此,本實驗選擇在常溫下過濾。