查询词典 thin layer

2Have studied and separated the leaf of ginkgoes to draw the process conditions of the liquid with chromatogram in post form by oxidizing aluminium, colloidal silica thin layer fen.

2研究了用氧化铝、硅胶薄层分和柱状色谱分离银杏叶提取液的工艺条件。

Key words thin-layer pH-chromatography;ionization constant;organic acid

如果当固定相的［H+］＞＞Ka时，则Ka/［H+］可忽略，这样即可得到Rf值的极限值

Methods: Check hebra ephedrae and licorice root by thin layer chromatography; check the content of baicalin by high performance liquid chromatography.

用薄层色谱法检查麻黄、甘草；用HPLC法测定黄芩苷的含量。

Gargle ; chlorogenic acid ; licorice root ; bomeoi ; thin layer chromatography ; HPLC

漱口剂；绿原酸；甘草；冰片；薄层色谱法；高效液相色谱法

3 Carotenoids were identified by chromogenic reaction, thin-layer chromatography ,and spectroaanalysis,and were compared with maize yellow pigment and β.

从小米中提得天然食用黄色素，通过显色反应、薄层层析和光谱分析，并与玉米黄色素和β—胡萝卜素标准品相对照，确定其主要化学成分为类胡萝卜素，可能有：玉米黄素(3，3′—二羟基—β—胡萝卜素)，隐黄素(3—羟基—β—胡萝卜素)和叶黄素(3，3′—二羟基—α—胡萝卜素)等。

Then, a thin layer of PTFE film is glued on the surface of the manganin film to package the sensing element. The response time of this gauge was found to ralated to the mounting mode of the transducer.

实验发现该传感器的响应时间与安装方式有关，当基板正对飞片时，响应慢；而PTFE薄膜正对飞片时，响应快。

When a thin layer of blue mist floated in the lotus pool, the leaves and flowers seemed washed by the milk or a dream covered by veil.

薄薄的青雾浮起在荷塘里。叶子和花仿佛在牛乳中洗过一样；又像笼着轻纱的梦。

AVO characteristics were ambiguous in thin-layer interbed sandstones and mudstones of terrestrial facies of Daqing area.

Hillterman简化方程的AVO技术，进行了三维AVO反演，得到垂向入射反射系数（ND和泊松反射系数两个主要AVO属性体。

AVO characteristics were ambiguous in thin-layer interbed sandstones and mudstones of terrestrial facies of Daqing area.

大庆地区陆相砂泥岩薄互层AVO特性不明显，甚至没有显示。

Total alkoloids in CCG were measured by nonaqueous potential titrations and tetrahydropalmatine by thin layer chromatography.

总生物碱的含量用非水电位滴定法测定，四氢帕马丁的含量以单波长反射锯齿式薄层扫描外标两点法测定。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。