查询词典 ethyl

It was found that ethyl acetate was the optimal organic solvent.

结果表明，乙酸乙酯是最理想的有机溶剂。

This is accomplished by adding hexane to ethyl acetate.

这是藉由加入己烷至乙酸乙酯中来完成。

This paper reports on a rapid method for the determination of ethyl acetate based on UV spectroscopy.

提出了一种基于紫外-可见光谱法快速测定乙酸乙酯的方法。

In particular, methyl acrylate and ethyl acetate are widely used in industry.

丙烯酸甲酯和乙酸乙酯是工业上常用的有机物质，在生产和使用中产生的废气极易造成环境污染。

Objective:To study the antitumor effects of Sorbaria sorbifolia ethyl acetate extract and its mechanism.

目的：探讨珍珠梅醋酸乙酯提取物对S180荷瘤小鼠体内的肿瘤抑制作用及机理。

After acidify with hydrochloric acid, the plasma was extracted with ethyl ether and then analyzed by Hypersil ODS2 (250×4.6 mm,5 μm) column with the mobile phase of methanol-water-triethylamine-acetic acid(2500∶1500∶15∶7), and at the detection wavelength of 355 nm.

血样经盐酸酸化后以乙醚提取，进行 HPL C分析，色谱柱为 Hypersil ODS2 (2 5 0× 4.6 m m，5 μm)，流动相为甲醇-水-三乙胺-冰醋酸(2 5 0 0∶15 0 0∶ 15∶ 7)检测波长为 35 5 nm，尼美舒利为内标。

Orthogonal test was performed to examine the influences of reaction conditions on microwave-assisted synthesis of 2'-oxo-cyclopentanecarboxylic acid ethyl ester from diethyl adipate.

以己二酸二乙酯为原料，在微波辐射下经Dieckmann缩合反应合成2'-羰环戊基甲酸乙酯。

Di-2-ethylhexyl adipate was synthesized with complex solid super acid SO(superscript 2- subscript 4)/ZrO2-TiO2 as catalyst. Effects of catalyst dosage, molar ratio of adipic acid to 2-ethyl hexanol, reaction temperature on reaction were studied.

以复合固体超强酸SO(上标 2-下标 4)/ZrO2-TiO2为催化剂合成了己二酸二（2-乙基）己酯，考察了催化剂用量、酸醇投料比和反应温度对反应的影响。

When the concentration of quaternary ammonium salt was less than 120mg/L, or that of hydroxy ethyl cellulose was less than 220mg/L, both of them could be used as nutriment to be degraded by aerobe.

当水样中季铵盐浓度小于120mg/L，羟乙基纤维素浓度小于220mg／L时，它们不具生物毒性，可作为营养物质被微生物利用。

In particular, when the Knoevenagel condensation of 2-hydroxybenzaldehyde was conducted with ethyl 2-cyanoacetate, 3-ethoxycarbonylcoumarin was obtained by simultaneous cyclization and alcoholysis of cyanide.

当反应底物为水杨醛与氰基乙酸乙酯的时候，产物为3-乙氧基羰基香豆素，这是水杨醛和氰基乙酸乙酯缩合关环，再发生氰基醇解的产物。

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。