查询词典 ether

Furthermore,inhibition effect of petroleum ether phase was stronger than the other different extract component from ethanol extracts.

在乙醇提取物不同的萃取组分中，石油醚部分的抑菌活性最强。

Being treated with alcohol and petroleum ether, tannin purity of the extract increased by 10% and the extraction ratio reached 95%.

采用乙醇和石油醚对其进行纯化处理，可使单宁纯度提高10％，单宁提取率达到95％。

Chen et C.Ling,20 times amount of petroleum ether,refluring for 2 h,and extracting 3 times.

结论该法的最佳工艺为：过325目筛温莪术微纳米粉体，加20倍质量倍数的石油醚，回流2 h，提取3次。

In study, we used petroleum ether as the solvent instead of aether during oximation process, which increased the yield above 85% dramatically.

对该路线进行了较多的实验工作，对各步反应的诸多影响因素进行了研究，确定了合理的工艺条件。

Its main insecticidal active components were weak polar matter and mainly distributed in the polarity range of petroleum ether.

不同极性萃取物的活性比较得知，杀虫活性成分主要是酯溶性的弱极性物质，分布在石油醚所在极性范围内。

The purpose of this study is petroleum ether (30℃-60℃) the optimum extraction of artemisinin-based research, as well as by ultraviolet-visible spectrophotometer in the artemisinin content of Artemisia annual samples.

本研究主要是对石油醚（30℃-60℃）提取青蒿素的最佳工艺的研究以及用紫外-可见分光光度计对青蒿中青蒿素含量的测定。

Soluble in acetone, benzene, toluene as organic solvents, soluble in petroleum ether and carbon tetrachloride.

溶于丙酮、苯、甲苯等有机溶剂中，难溶于石油醚和四氯化碳。

Liquefied petroleum gas and dimethyl ether are Group A dangerous chemicals.

液化石油气和二甲醚均属甲类危险化学物品。

Purified by petroleum ether instead of benzene, the results had no obvious difference.

与用苯作为洗脱剂方法测定结果比较，两者无显著性差异。

The organochlorine pesticide were extracted with acetone and petroleum ether, and purified with sulfuric acid.

用丙酮提取样品中残留的有机氯农药，石油醚萃取，萃取液以浓硫酸净化。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。