乙酸的

For different mixed ferment time, Sensory assessing was not different obviously;pH value,DM,CP,NDF,ADF content were all katabatic or decreasing with extending of mixed silage time; NH3-N/tN%and lactic acid ,acetic acid, propionc acid and butyric acid concentrations were increased gradually,butproportion of lactic acid was the most in total acids.

2不同发酵时间的感官评定结果无明显差别；pH值、DM、CP、NDF和ADF随发酵时间延长均逐渐降低或减少；NH3-N/tN%、乳酸、乙酸、丙酸和丁酸均逐渐增加，但以乳酸占总酸比例最大。

In fact, Kjeldahl method is not difficult to make up for deficiencies, as long as a multi-step process: first TCA to deal with samples.

其实凯氏定氮法的缺陷并不难弥补，只要多一道步骤即可：先用三氯乙酸处理样品。

The twig of Lagerstroemia floribunda Jack were extracted with ethanol and isolated with silica gel column chromatography.

多花紫薇的枝经乙醇冷浸提取，依次用石油醚、乙酸乙酯和正丁醇萃取。

The stem barks of Lagerstroemia calyculata Kurz were extracted with methanol and isolated with silica gel column chromatography.

副萼紫薇的茎皮经甲醇冷浸提取，依次用石油醚、乙酸乙酯和正丁醇萃取。

Objective the chemical constituents of the ethyl acetate extract of Lagerstroemia reginae Roxb, Lagerstroemia calyculata Kurz and Lagerstroemia floribunda Jack were studied in this research.

目的：本研究对大叶紫薇、副萼紫薇和多花紫薇乙酸乙酯萃取部分的化学成分进行研究。

In Laurencia cartilaginea, nine compounds (compoundsl-9) have been isolated and identified from the extraction of EtOAc fraction.

从软骨凹顶藻Laurencia cartilaginea乙醇浸提液的乙酸乙酯部分分离得到8个单体化合物和一组甾醇混合物(化合物1—9)，并通过IR、~1H-NMR、~(13)C-NMR、EI-MS、GC-MS、FAB-MS、ESI等波谱技术进行鉴定。

Determination of linalol and linalyl acetate content.

芫荽醇和乙酸香醇酯含量的测定。

Rodionov method is applied in this paper, that is, corresponding aldhyde, malonic acid and ammonium acetate are used to synthesize P-amino acids.

本文主要采用Rodionov法进行合成，即以不同类型的醛和丙二酸、乙酸铵为原料来制备β-氨基酸。

In our previous study [6] immobilization of PPO was achieved in matrices of polypyrrole and a copolymer of menthyl ester of 3-thiophene acetic acid with pyrrole.

在以前的研究[6]固定化多酚氧化取得方阵吡咯、薄荷共聚物酯3-吩与吡咯乙酸。

Menthol and menthyl acetate are both high boiling point matter, A gas chromatographic Model 9790 was used, equippedwith stainless steel column(2m×2mmΦ) packed with SE- 30(5%)and 101 white support.

薄荷醇与乙酸薄荷醇酯都是高沸点化合物。选用9790-气相色谱仪，以5％SE-30/101白色担体作为固定相的不锈钢填充柱为分离柱。

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。