查询词典 liquids

Dihydropyrimidin-2 (1H)-ones were synthesized by condensation of aromatic or aliphatic aldehydes, urea and ethyl acetoacetate or acetylacetone one-pot three-component Biginelli condensation in the presence of room temperature ionic liquids as catalysts under solvent-free conditions.

5利用室温离子液体作催化剂，芳香或脂肪醛、尿素和乙酰乙酸乙酯或乙酰丙酮三组分缩合制备3，4-二氢嘧啶-2-酮衍生物。

In this dissertation, the practical significance and the recent development of non-phosgene synthesis of N-substituted carbamates are reviewed briefly, as well as the application of ionic liquids in catalysis.

本论文综述了非光气合成N-取代氨基甲酸酯类化合物的现实意义和研究进展，以及离子液体在催化反应中的应用。

The security device provides superior detection capabilities and is highly resistant to detuning by elements such as metal, foil, and liquids.

安全设备有很好的检测能力，并具有很强的抗干扰能力，如金属，金属箔，和液体带来的干扰。

Dewars are open, nonpressurized vessels for holding cryogenic liquids.

杜瓦瓶是用于容纳低温液体的开放式的不加压容器。

Attractive, comfortable to walk on, impervious to common liquids such as antifreeze and oil drippings.

吸引力，舒适上行走，不透水共同液体如防冻液和石油滴水。

Liquids fall from "droppers" and will bounce around the walls of a mechanism.

液体流出后，碰到不同的道具和q1ang将会作不同方向的反弹。

So, the purpose of the subject is to predict the density and the range of the vapor spread, the influential area timely, fast, effetely, ocular and to formulate the relate rescue measures according to it, to wish to provide the reference in order to control and handle the leakage accidents of the combustible liquids during the road transportation.

因此，本课题的研究目的就是在易燃液体在公路运输过程中发生泄漏事故后，能及时、迅速、有效、直观地对易燃液体蒸气在大气中的扩散浓度、扩散范围、影响区域做出预测并以此为依据制定相应的应急措施，希望能为公路运输易燃液体泄漏事故的控制和处理提供一点参考。

An ancient Roman measure for liquids, equal to about seven eighths of a U.S.

堪吉斯一古罗马液量单位，大约相当于7／8美制加仑

An ancient Roman measure for liquids, equal to about seven eighths of a U.S.gallon3.3liters.

堪吉斯一古罗马液量单位，大约相当于7／8美制加仑

An ancient Roman measure for liquids, equal to about seven eighths of a U.S. gallon(3.3 liters).

堪吉斯一古罗马液量单位，大约相当于7／8美制加仑（3.3公升）

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。