extraction n. 1.抽出,拔出。 2.【化学】提取(法);萃取(法);回收物,提出物;精炼。 3.精选,摘要。 4.血统,家世,出身。 5.【数学】开方,求根。 spirit of the first extraction 原汁酒。 a man of foreign extraction 外国(血统的)人。 extractions from a book 一本书的内容摘录。 an extraction of 81 percent 百分之八十一的出粉率,八一粉。 the extraction of root 【数学】开方法,求根法。
Solvent effect on extraction efficiency of chlorogenic acid from the leaves of eucommia ulmodies by ultrasonically assisted extraction technique 超声助提杜仲叶中绿原酸的溶剂效应
By broking the wall of powdered oils with ultrasonic , the oil extraction efficiency yield was 65 % , which met the need of determining pov 超声波破壁法提油其提油率可达65 %左右,可满足测定要求。
For improving the extraction efficiency of anthocyanins , inactivate these substances is needed during raw material processing and pigment extraction 在色素提取时要首先将这些活性物质钝化,以提高花青素的产率。
Analytical formulas for the peak power , pulse energy , pulse width , energy extraction efficiency , repetition rate and average output power are derived 计算出了自调q脉冲的峰值功率,单脉冲能量,脉冲宽度,能量利用率,重复频率,平均输出功率等。
The respectively and the extraction efficiency of drugs in blood and urine were 95 . 8 - 98 . 5 % ( barbitone 68 . 83 - 69 . 94 % ) , viscera were 83 . 2 - 91 . 2 % ( barbitone 60 . 02 - 67 . 32 % ) 5范围内:脏器检材除巴比妥茬取率为60刀2 67 32以外,其余药物革取率均在83二gi二范围内。
As a result , the sensitivity of method was enhanced . the extraction efficiency , stability , selectivity and quantity capability of c16 - mcm - 41 coated fibers to the samples were investigated 用xrd 、 n _ 2吸附-脱附、元素分析、 ft - ir和荧光光度法对复合材料进行了表征,荧光光度法是本文首次用于介孔复合材料的表征。
Supercritical fluid extraction ( sfe ) is a sample separation technology and it has the advantages of simplicity 、 good extraction efficiency 、 rapidity 、 great analyte selectivity 、 easy control reduced environmental hazard and so on 摘要超临界流体萃取作为一种样品分离技术具有操作简单、高效、快速、选择性高、易于控制、环境友好等特点。
Our experiments showed that the methed has many advantages , such as high extraction efficiency , simply process , less pollution , and the cost is smoll etc . but extraction quotiety of the dark brown pigment differ from walnut epicarp of the three made of dryness 色素溶液的吸光度随波长增加而减小的趋势相同,色素的水溶性,耐氧化一还原性,耐光性,盐、蔗糖、金属离子对色素的色泽的影响基本相似。
Abstract : the total quantity of perylene quinonoids in hypocrella bambusae ( b . et br . ) sacc . , shiraia bambusicola p . henn and culture substance of ascomycetes hypocreacae ( fr ) tul . sp . were determined with spectrophotometric methods . the relative extraction efficiency were studied when ethanol , acetone and chloroform were used as solvents . among them acetone was the best one 文摘:用分光光度法测定了竹红菌、竹黄和菌寄生菌培养物中?醌类化合物的总量;同时研究了以无水乙醇、丙酮和氯仿为溶剂提取?醌类化合物的相对效率,结果发现以丙酮为溶剂最合适。
For the ld pumped self - q - switched laser , the peak power , pulse energy , pulse width and energy extraction efficiency , which have been influenced by the loss in the cavity , cavity length and the threshold absorption coefficiency of the absorber , have been calculated . then we know how to choose the parameters of the self - q - switched laser for design 根据自调q二极管泵浦固体激光器的特点,计算了腔内损耗、腔长和饱和吸收体的初始吸收系数对于峰值功率、单脉冲能量、脉冲宽度和能量利用率的影响,并由此提出了设计自调q激光器中的参数选择规律。