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A gas chromatographic analysis method was established in the study of the conversion of acrolein to 1,3-propanediol by hydration and hydrogenation.

建立丙烯醛水合加氢制1,3-丙二醇的气相色谱定性定量分析方法。

Studies on Production of Cyclohexanol by Hydration of Cyclohexene Ⅰ.

环己烯水合制备环己醇的研究Ⅰ。

Coleophora obducta (Lepidoptera: Coleophoridae) is a defoliator of larch and exclusively latent in leaves. This article tested behavioral responses of C.

运用触角电位仪和"Y"型嗅觉仪测试鞘蛾对落叶松9种挥发物,即R-α-蒎烯、S-α-蒎烯、β-蒎烯、罗勒烯、水芹烯、3-蒈烯、月桂烯、莰烯和叶醇的EAG和行为反应。

Bromoethyl acetate was synthesized by reacting ethylene glycol with an aqueous solution of hydrogen bromide(47%) and acetic acid(1:1:1.3) in the water-carrying agent, which formed an azeotrope with water but not with 2-bromoethyl acetate.

以乙二醇、w=47%和冰醋酸为原料,在带水剂的作用下合成了2-溴乙基乙酸酯。

Objective: To explore the effects of Paecilomyces Gunnii extracts of water-alcohol on hyperlipemia in rats.

目的:探讨古尼拟青霉水-醇提取物对大鼠高脂血症的影响。

Coleophora obducta (Lepidoptera: Coleophoridae) is a defoliator of larch and exclusively latent in leaves. This article tested behavioral responses of C.

运用触角电位仪和&Y&型嗅觉仪测试鞘蛾对落叶松9种挥发物,即R-α-蒎烯、S-α-蒎烯、β-蒎烯、罗勒烯、水芹烯、3-蒈烯、月桂烯、莰烯和叶醇的EAG和行为反应。

The process industrial synthsis of tert-dodecyl mercaptan from dodecylene and hydrogen sulfide with aluminium trichloride as catalyst was introduced, which consists of four units including the preparation of catalyst, purification of raw dodecylene, additive reaction and separation of reaction product.

介绍了以无水三氯化铝络合物为催化剂,十二烯和硫化氢直接加成法生产叔十二烷基硫醇的工业试验工艺。

The relaxation strength obtained from Cole-Cole plots (1) is associated with the amount of water molecules subjected to electric conduction, while the obtained from Cole-Cole plots (2) mainly represents the total amount of methylol groups and adsorbed water molecules possible to reorient.

由 Cole-Cole 圆弧则(1)得到的弛豫强度与进行离子导电性的水分子的数量有关,而由 Cole-Cole 圆弧则(2)得到的弛豫强度则代表木材中可能进行回转取向运动的伯醇羟基和吸着水分子的总数。

The optimum condition of preparing process were obtained: the amount - of - substance ratio of sodium hydroxide and eerie sulfate tetrahydrate was 4.8:1 ,the quantity of PEG was 8 mL in reaction and 7 mL in washing, absolute alcohol was 10 mL in washing, irradiation time was 6 min, constant microwave irradiation pressure was 0.14 MPa, microwave power was 232 W, the ultrasonic wave dispersing time was 10 min and the microwave drying time was 10 min.

通过考察制备过程中的各个影响因素,得到了制备纳米二氧化铈的最佳工艺条件:氢氧化钠与四水硫酸高铈物质的量比为4.8:1;聚乙二醇的反应用量为8mL,洗涤用量为7mL;无水乙醇的洗涤用量为10mL;微波恒压时间为6min;微波压力为0.14MPa;微波功率为232W;超声波分散时间为10min;微波干燥时间为10min。

According to Johnson's Rule and IR spectra, their possible structures are suggested. The bonding parameters of those complexes are calculated by ESR parameters. And the crystal field parameters are calculated by using electronic spectral data. It can be seen that the vanadyl complexes in the solution are ionic complexes and that the α〓 values of those complexes decrease following the increasing of the N donor replacing the O donor of water on the equatorial plane in those complexes. This means that the covalent bonding between vanadium and ligand increases as Ser, Phen or Bipy replace water ligands. The results show the competitive coordinate law that the coordination reactivity of Phen and Bipy is much stronger than that of Ser. The simulation program of ESR is compiled by the theory of ESR in the present work.

测定了VO-丝氨酸二元体系、VO-丝氨酸-邻菲咯啉三元体系和VO-丝氨酸联吡啶三元体系在不同酸度下(pH=1.0~14.0)的乙二醇/水(V/V=1:1)溶液低温ESR谱,发现不同pH下,溶液中具有不同组成的配合物,根据不同pH下ESR谱的变化,利用Johnson的加合规则并结合红外光谱,推测了它们在溶液中的可能结构;利用波谱参数计算了配合物键参数;利用电子光谱数据计算了配合物的晶体场参数,讨沦了它们的成配特性,结果表明:VO配合物属离子型配合物,随取代水分子的配体(Ser、Phen或Bipy)数目增加,键参数减小,配合物共价性增强,同时得出这些体系中,生物配体竞争配位规律:Phen和Bipy与VO的配位能力比Ser强。

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