乙酸

And the contents of high boiling point components such as camphor, borneol and bornyl acetate in flower oil which are 11.97 %,8.48 % and 4.29 % respectively, are higher than those in leaf oil.

含量测定结果表明花油中α-蒎烯，莰烯，β-蒎烯，α-水芹烯和β-月桂烯等低沸点成分含量分别为17.58 %，13.19 %，1.13 %，2.03 %，1.02 %，比叶油低；而樟脑，龙脑和乙酸龙脑酯等高沸点成分的含量分别为11.97 %，8.48 %，4.29 %，比叶油高。

In the test 5 treatments of single-sowed alfalfa or smooth brome grass, and their mix-sowing with different ratios of 50%+50%, 60%+40% and 70%+30% were set up to analyze pH, CP, NDF, ADF, acetic acid, butyric acid, lactic acid and total acid of the silage in each treatment and study the effect of alfalfa and smooth brome grass with different mix- sowing ratio on silage quality.

方法］试验设5个处理，即紫花苜蓿单播、无芒雀麦单播、紫花苜蓿＋无芒雀麦以50%+50%、60%+40%和70%+30%比例混播，分析各处理青贮材料的pH值、CP、NDF、ADF、乙酸、丁酸、乳酸和总酸的变化，研究无芒雀麦与紫花苜蓿不同比例混播对青贮品质的影响。

A salt of bromic acid.Indocin is the trade name of this nonsteroidal anti-inflammatory drug.

氯苯基甲氧基甲基吲哚乙酸是一种非固醇抗炎药物的商标名称。

Bromic second of ③ profess to convinced is acerbity personal alkyl female phenol, every time 20mg, daily 3

口服溴乙酸己烷雌酚，每次20mg，每日3次

In part three oxidation of bromide with an ion-supportedbenzene in ionic liquids afforded a clean path for bromination of alkenes. It was found that this reaction is highly stereoselective.

在离子液体中使用离子支持的二乙酸碘苯氧化溴离子，提供了一条清洁的烯烃加溴途径，发现反应具有高的立体选择性。4。

Bromothiophene was synthesize d from thiophene through bromination to give 2,3,5-tribromothiophene,then reduced by Zinc in acetic acid.

以噻吩为原料，先和溴素反应合成2，3，5-三溴噻吩，再以锌作还原剂在乙酸溶剂中反应得到3-溴噻吩，主要研究了第一步反应时的原料配比对反应的影响及第二步的反应时间对反应的影响，反应总收率达72.6%。

Bromination of 4-chloropropiophenone with Br2 in AcOH gives a-bromo-4-chloropropiophenone in 98% yield.

乙酸中用液溴溴化对氯苯丙酮得到α-溴代对氯苯丙酮，收率98%。

Bromo-2′,4′-dichloroacetophenone was synthesized in three steps,w hich were bromization ,chlorination and acylation,from glacial acetic acid and m -dichlorobenzene.

以冰乙酸和间二氯苯为原料，经溴化、氯化、酰化三个步骤，制得 2—溴- 2′，4′-二氯苯乙酮，产率达 70 %。

Ethoxycarbonyl-4,5-dimethyl-pyrrole (7) was prepared from ethylacetoacetate, ethyl formate and methyl ethyl ketone via oximination, Claisen condensation, and reductive condensation. The bromization of compound 7 gave 2-ethoxycarbonyl-3-bromo-4,5-dimethyl-pyrrole(8), which could be transferred to 2-ethoxy-carbonyl-3-brome-4-methyl-5-formyl-pyrrole (9) by the formolation.

由乙酰乙酸乙酯、甲酸乙酯及丁酮等原料经过肟化、Claisen缩合、还原缩合成环得到2-乙氧羰基－4，5-二甲基－吡咯(7)，溴化生成2-乙氧羰基－3-溴4，5-二甲基－吡咯(8)，最后经过甲酰化反应得到目标产物2-乙氧羰基－3-溴－4-甲基－5-甲酰基－吡咯(9)。

The method is based on the oxidation of bromocresol green with potassium periodate using manganese as a catalyst and nitrilo triacetic acid as an activator in a solution of HAc-NaAc.

研究了在HAc-NaAc介质中，以氨三乙酸为活化剂，锰离子催化高碘酸钾氧化溴甲酚绿的褪色反应，建立了测定痕量锰的新方法。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。