查询词典 extraction

Key words 〗 Ultrasonic extraction; Semi volatile organic compounds ; Soil; Methylene dichloride; Soxhlet extraction

关键词〗超声波萃取；半挥发性有机物；土壤；二氯甲烷；索氏提取

Introduced the reaction principle and experimental method of edulcoration arid solvent extraction, has studied the factors of solvent extraction: the phase ratio, the time, the pH, the temperature and so on.

介绍了除杂和溶剂萃取的反应原理和实验方法，研究了相比、时间、pH、温度等对溶剂萃取的影响。

The PPESK stir bar was proved to show one order of magnitude higher extraction capacity than the corresponding PPESK fiber and two orders of magnitude higher extraction efficiency than PDMS stir bar.

对于硝基苯类爆炸物， PPESK固态萃取搅拌棒的萃取容量比萃取纤维针提高1个数量级以上；其萃取效率比PDMS固态萃取搅拌棒高2个数量级。

Of our predecessors by improving extraction technology, used solid-phase extraction way to extract a separation, that is, the AB-8 macroporous resin for solid phase, ethanol - water eluate, through multiple-eluting And constantly improve the preparation of conditions, from the extract of red flowers in the isolated flavonoids components.

对前人的提取工艺进行了改进，用固相萃取的方式对提取液进行了分离，即以AB－8大孔吸附树脂为固相，乙醇－水为洗脱液，通过多次洗脱，不断优化制备条件，从红花的提取物中分离出黄酮组分。

Under the determined extraction conditions, a new process of countercurrent liquid membrane extraction technology was adopted to separate terbutaline enantiomorph.

基于实验已确定的萃取条件，采用液膜逆流萃取技术分离特布他林对映体。

In this paper, ethanol is choosed as the entrainer to the solanesol supercritical CO2 extraction experiments by Soxhlet extraction.

本课题采用索式提取方法，确定了乙醇为超临界CO2萃取茄尼醇的夹带剂。

The optimized technological condition for the extraction of nonpolar substances such as volatile oils in Fructus evodiae with SFE-CO2 technique was as follows: pressure of 26 MPa,temperature of 40 ℃,entrainer of 95 ％ alcohol and extraction time of 1.5 h .

吴茱萸用SFE-CO2提取挥发油等非极性物质的工艺条件为：提取压力26 MPa，温度40℃，夹带剂95％乙醇，提取时间1.5 h。

Nederman is a world leader in dust and smoke extraction, exhaust fume extraction, hose and cable reels, workplace partitioning and protective gear.

尼的曼在灰尘和烟雾净化、汽车尾气抽排、水管和电缆盘管器、工作场所分割和保护装备方面，是全球性的业界领导者。

The results showed that the influences on condensation of alcohol, t he amount of water-adding,extraction temperature and extraction time on the co n tent of polyhexose-extracting of the whole fruit and its exocarp were indistinc t ive relatively....

结果表明所选 4个因素(乙醇体积分数、加水量、加热温度和提取时间)对全果和外果皮多糖提取的影响相对不显著，采用短时多次提取，多糖提取比较完全。

The optimum extraction conditions were obtained by using 5 mL of water (pH=8) as the extractant at 70℃ with 5 min static extraction.

研究表明，在萃取温度70℃，萃取时间5 min，提取液的pH为8.0，提取液体积为5 mL的条件下，灭多威有最高萃取效率。

It is recognized by the symmetrical rosette (hair radiating symmetrically from a center) and erect ridge patterns on its body and head.

它是公认的对称花环（头发从一个中心辐射对称）和竖脊模式，其身体和头部。

At present, the processing method of PDM stator is to form rubber casting inside its smooth wall at home and abroad, and whichs rubber casting surface is a type of spiral curved surface.

目前国内外公知的螺杆钻具定子的加工方法是将橡胶浇铸在定子壳体光滑内壁形成的，橡胶衬套的内表面是螺旋曲面。