查询词典 multiple-choice

The chloroform layer and the aqueous layer were separated by multiple column chromatography including macroporous resin, silica gel and polyamide column and preparative HPLC. The compounds obtained were identified by mass spectra and NMR data.

大青叶乙醇提取物，用氯仿萃取后得到氯仿层和水层，各层再分别采用硅胶柱、大孔树脂柱、聚酰胺柱、制备液相、葡聚糖凝胶柱层析及重结晶等分离手段进行分离、纯化，并应用化学性质和质谱、波谱法（1H-NMR、13C-NMR、HMBC）鉴定其化学结构。

The museum of the archbishopric of Cologne combines multiple levels of history - the ruins of the Gothic church of St. Kolumba, destroyed during World War II, a chapel built in 1950 to enclose a late-Gothic statue of the Virgin that survived the war, an archeological excavation conducted in the 1970s that discovered Roman and Medieval remains.

博物馆科隆大主教多层次相结合的历史-废墟中的哥特式教堂圣Kolumba ，销毁二战期间，一个小教堂建于1950年附上晚期哥特式雕像的美属维尔京说，幸存的战争，一个考古挖掘中发现了上世纪70年代古罗马和中世纪遗迹。

Long geological evaluation and Cenozoic structural and fault activities led to the formation of multiple types of oil and gas pools from Neogene to Archeozoic Era and resulted in a great deal of oil and gas accumulations in uplifts and sags.

漫长的地质演化和新生代构造断裂活动形成了上第三系至太古界多层系多类型的油气藏，在凹陷、凸起的各部位，分布着大型油气聚集带。

Any integer multiple of an infinitesimal is still infinitely small, i.e., infinitesimals do not satisfy the Archimedean property .

这种做法失宠于19世纪，因为这是很难的概念微不足道精确。

An efficient parallel algorithm, PMAR, which is based on share nothing architechure in multiple computers, is given to settle the problem of mining association rules in a distributed database or a very large database, An incremental updating algorithm for mining association rules, EUIA, which is based on algorithm LIDBSO, is proposed.

提出了一个基于多台计算机间无共享体系结构的高效并行采掘关联规则的算法PMAR，用于解决在分布式数据库中或在特大数据库中的关联规则采掘问题。

Argo is written in Java, runs on multiple platforms and is freely available for download at http://www.broad.mit.edu/annotation/argo/.

Argo是用Java编写，运行在多种平台，免费下载地址：http：//www.broad.mit.edu/annotation/argo/。

This method overcomes the uncertain multiple factors which can't be solved by the quantification of aridity index.

在灰色系统理论的基础上，提出了用于评价干旱程度的灰色关联分析法，它克服定量化干旱指数所不能解决的不确定多因素。

"Zhang Jian Qiu count as" Communication is the question 92, the achievements of the more prominent and there is the common denominator least common multiple of the calculation, the arithmetic progression of the problem to solve, some uncertainties, such as problem solving equation.

张丘建算经》现传本有92问，比较突出的成就有最大公约数与最小公倍数的计算，各种等差数列问题的解决、某些不定方程问题求解等。

Use this command to vertically arrange multiple open windows in a non -''.

使用此命令垂直排列多个已打开的窗口，使之处于非''。

One of the cDNAs was further analyzedby3'-RACE and multiple tissue expression array.

进一步用RACE和MTE Array分析差异表达基因。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。