乙酸

Ethyl Acetate: A sweet, vinegary smell that often accompanies acetic acid.

乙酸乙酯：一种美好的酸味，经常伴随着醋酸一起出现。

This article makes the comprehensive analysis on the organic contaminants in acid wastewater in the acetaldehyde unit by means of SPME, GC／MS, GC and volumetric analysis, and tries to find possibility of recovery of acetic acid.

采用SPME、GC／MS、GC及容量分析技术对乙醛装置酸性废水中有机污染物进行了综合分析，探讨了回收乙酸的可行性。

The crystalline amide of acetic acid, CH3CONH2, used as a solvent and wetting agent and in lacquers and explosives.

乙酰胺乙酸的晶体胺，CH3CONH2，用作溶剂和湿润剂，并用于油漆和炸药

RESULTS: These values were lower for staffs working in operating room than other staffs without contacting peroxyacetic acid, and showed a higher xerophthalmia incidence.

结果：与过氧乙酸接触的人群其Schirmer试验、泪膜破裂时间及泪液溶菌酶含量数值均低于非接触人群，并具有较高的干眼症发病率。

Methods:Anti-inflammation of XSG was observed by mouse model of auricle swelling and rat model of ankle joint swelling caused by xylol and egg-white respectively,and analgesia was tested by hot-plate caused sole-ache and acetic caused bellyache.Gastric ulcer model rats was duplicated in by Reserpine and Acetate.

采用小鼠二甲苯性耳廓肿法、大鼠蛋清性关节肿法进行抗炎实验观察；采用小鼠醋酸扭体法、热板法进行镇痛实验观察；用利血平、腹腔注射及冰乙酸直接胃壁注射复制大鼠胃溃疡模型，观察香砂六君颗粒对两种胃溃疡动物模型的溃疡指数的影响并计算溃疡抑制率。

Acetic acid of mass fraction lower than 0.05 % in culture medium caused minor influence on xylose fermentation.

发酵液中的乙酸质量分数低于 0.05%时对发酵木糖影响不大。

To the separatory funnel in 10 ml acetate buffer and dispensable 1 ml of sodium thiosulfate solution, blending, followed by a second all-Canadian 10.0mL tetrachlorocarbon dithizone-0.01g/L solution, vibrating 2min, standing out carbon tetrachloride layer to 1 cm chromatometry Cup, zero-zero, adjusting to 520nm wavelength measuring the absorbance at, draw a comparison between the quantitative standard curve.

向各分液漏斗内加5mL乙酸盐缓冲液及1mL硫代硫酸钠溶液，混匀后再各加10.0mL二硫腙－四氯化碳溶液(0.01g/L)，振摇2min，静置分层，分出四氯化碳层于1cm比色杯中，以零管调节零点，于520nm波长处测吸光度，绘制标准曲线比较定量。

The first day after C6 cells were seeded in rats bearing glioma, these rats were abdominally injected PA at the dose of 550mg/kg/d, twice a day for two weeks or DMF 570mg/kg/d in the same way.

分别在荷瘤大鼠种植胶质瘤细胞C6后第1d，对大鼠进行苯乙酸550mg/kg/d，二次/日，连续两周腹腔注射，或二甲基甲酰胺570mg/kg/d，二次/日，连续两周腹腔注射治疗。

Then the extracts of petroleum ether,chloroform,ethyl acetate,n-butanol and distilled water were extracted by solvent extraction,and whose acaricidal activity were detected by killing Psorptes communis cuniculi in vitro.

用石油醚、氯仿、乙酸乙酯、正丁醇、蒸馏水五种溶剂对丁香进行部位提取，采用离体杀螨试验观察各部位提取物的杀螨活性。

The exact of petroleum ether was the acaricidal active site of Eungenia caryophyllata. 3.Isolation, purification and identification of compounds with acaricidal activity in Eugenia Caryphyllata: The exact of petroleum ether was separated into 6 parts by silica gel column chromatography with gradually increasing polarity of petroleum ether: ethyl acetate. The part C was demonstrated to be the most effective part by acaricidal activity test in vitro,and the time for it to kill all experimental mites was about 20 min.

丁香杀螨活性成分的追踪分离、纯化与结构鉴定：采用硅胶柱层析法，以石油醚：乙酸乙酯溶剂系统梯度洗脱，对丁香石油醚提取物进行分离，得到A~F 等6 段混合物，离体杀螨试验发现，C 段混合物具有突出的杀螨活性，50%浓度平均15min可杀死全部供试螨虫。

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。