petroleum solvent的例句大全

the industry application of sweetening catalyst in the petroleum solvent system

脱臭剂在溶剂油系统上的工业应用

organic modified silicone oil , petroleum solvent and so on .

有机改性硅油、石油溶剂等。

Study the inspection of the depickling solvent recovery mode, the recycling condition, and recycling petroleum acid;

完成对脱酸剂回收方式、回收条件，回收石油酸等问题的考察；

the mineral products such as salt, solvent naphtha, cement, liquefied propane, liquefied butane and liquefied petroleum gas;

盐、溶剂油、水泥、液化丙烷、液化丁烷、液化石油气等矿产品；

Method: To get the extracts of Spora Lygodii using methanol, chloroform and petroleum ether as solvent and the extracts were identified 、 analyzed by X-ray diffraction Fourier fingerprint spectra.

方法：以甲醇、氯仿、石油醚为提取溶剂，提取中药材海金沙，采用粉末X射线衍射Fourier谱鉴定法对提取物进行分析鉴定。

the greatest risk of fire and explosion exists if the dry cleaning shop uses a petroleum-based solvent in dry cleaning machines.

最大的风险，火灾和爆炸存在，如果干洗店使用石油为基础的溶剂在干洗机。

Compared the spectrogram , that the petroleum ether used as solvent is better than anther.

通过气相色谱分析的谱图比较, 发现石油醚的提取效果较好.

Solvent naphtha is one of the five broad areas of petroleum products.

溶剂油是五大类石油产品之一.

The results show: ( 1) the splitted by product of petroleum is an efficient solvent for coal extraction;

结果表明：（1）试验用石油裂解副产品是一种高效煤溶剂抽提物质；

In the meanwhile, the effects of varied acids for protecting third carbonyl group were investigated. Through the trial and error, the mixture of anhydrous alcohol/ petroleum benzine is the good solvent of target molecule recrystal.

考察了酸性对保护3位羰基的影响，确定了无水乙醇/石油醚是目标分子重结晶的最佳溶剂体系。

This text adopt at first petroleum ether go on and draw and study sour esterses to the fruit pigment of madder under the same terms second acetone ethanol, Select the best solvent.

采用以水、乙醇、丙酮、乙酸乙酯、石油醚作为溶剂在相同的条件下对茜草果实色素进行提取研究，选最佳溶剂。