英语释义

1. relating to or involving the arrangement of atoms in space spatial

2. relating to or involving the arrangement of atoms in space

片语

steric c空间的

steric compression空间压缩

Steric Chemistry立体化学

steric effects立体效应（空间效应）

Steric Parameters立体参数

steric stability空间稳定性

steric cid硬脂酸

steric protection位阻保护作用

steric hindrance[化学] 位阻，位阻现象

steric effect立体效应（空间效应）

英汉例句

• from structure of organic compounds, this paper analyses and discusses impact of acids basing activity of organic molecules about electronic effect, hybrid method and steric effect.

  主要从有机化合物的结构出发，分析和判断了电子效应、杂化方式及空间效应等因素对有机分子酸堿性的影响。

• a multi - center fragmentation is governed by steric factors.

  多中心断裂受到位阻因素的控制。

• the stereoselectivity was improved by increasing steric hindrance of the reactions.

  通过增加反应的空间位阻改进了反应的立体选择性。

• steric stabilized siloxane hybrid acrylic polymer(sspa) dispersion was prepared by surfactant-free emulsion polymerization with thiol group terminated polyvinyl alcohol(pva-sh) as protective colloid.

  以分子链一端为巯基的聚乙烯醇（pva-sh）为保护胶体，合成了空间稳定的硅氧烷改性丙烯酸酯聚合物乳液。

• this text illustrates the application of hybrid orbital theory in the field of explaining the steric configuration of molecule and the change of chemical property.

  并举例说明了杂化轨道理论在解释分子空间构型和物质化学性质的变化上的应用。

• according to the steric field and electrostatic field of the model, some compounds which have high predicted activity were forecast, and they may be employed as reference for further study.

  根据模型的立体场和静电场要求设计了一批化合物，其中多数化合物预报的杀菌活性较高，为进一步合成和筛选该类化合物提供了依据。

• the mechanism of its influence on the system was also explained by the effect of steric stabilization.

  结果发现乳液膜的稳定性显着提高，并用空间稳定作用对结果作了解释。

• the explanation of these results is based on the assumption that there are reaction mechanisms and steric effects of the zeolite pore.

  实验结果可由氢型丝光沸石催化剂的酸强度、酸量、酸中心类型以及沸石晶体孔结构的空间效应与反应机理予以说明。

• it was found that the cations in the zeolite zsm-6 might exert steric hindrance on the adsorption of cyclohexane at room temperature (25℃).

  发现室温下环己烷分子的吸附受到阳离子的空间障碍作用。

• the steric and electronic configuration around the center metals has profound effect on the polymerization activity and the stereo- and regio-selectivity of the resulting polymers.

  中心金属离子周围的电子效应和空间效应影响着催化剂的反应性能和所得聚合物的微观结构。

• the result indicates that there is a good correlation between the distribution of molecular steric and electrostatic field and bioactivity.

  结论说明该系列化合物的分子立体场和静电场的分布与生物活性之间有良好的相关性。

• steric stabilized siloxane hybrid acrylic polymer(sspa) dispersion is prepared by surfactant-free emulsion polymerization with thiol end group polyvinyl alcohol(pva-sh) as protective colloid.

  以分子链一端为巯基的聚乙烯醇（pva-sh）为保护胶体，合成了空间稳定的硅氧烷改性丙烯酸酯聚合物乳液。

• the reinforced concrete has an obvious steric effect in real earthquakes. there is a complicated coupling between the axis force and compound bending which change in side columns and angle posts.

  在实际地震作用下钢筋混凝土结构的反应常常呈现明显的空间效应：框架边柱或角柱中变化的轴力和双向弯曲存在复杂的耦合作用。

• and it was found that dioxo-methyl group was a key factor to determine the antioxidant activity of dcls, because its o and c had rather high net charge and its steric hindrance was rather low.

  发现二氧甲基基团具有较大的o原子负电荷及c原子正电荷，且空间位阻较小，因此成为决定五味子素抗氧化活性的关键因素。

• nmr relaxation times of four protons at different positions versus steric effect and mixing proportion in ligand mixtures were monitored.

  实验监测了配体中不同位置的质子的nmr弛豫时间随空间距离及配体比例改变的变化情况 。

• in the end, the steric hindrance of the acetyl group was discussed.

  最后，本文讨论了空间位阻效应对反应性质的影响。

• thee three-dimensional 「functional shape」 formed by the steric (physical) and electric fields of a drug molecule that cause the molecule's pharmacological activity.

  一个药物分子经过物理或电场作用形成三维功能结构从而引起分子的药理活动。

• the steric structure is the main effect on the herbicidal activity as results.

  研究结果表明，影响其药效的主要因素是空间结构。

• adding surfactant with larger steric structure and longer linear chain could significantly improve the anti-repeated heating and shear-resistant properties of the pour point depressant.

  添加有较大的空间结构和较长直链的表面活性剂对原油流动性改进剂抗重复加热和抗剪切能力的改善效果最好；

• the result showed that the steric factors of substituents were important parameters affecting the aerobic biodegradability of the tested compounds.

  结果表明，对邻苯二甲酸酯类化合物而言，取代基的空间结构参数是影响受试物好氧生物降解性能的重要因素。

• due to the steric effect, there may be different toxicity mechanisms between long-chain and short-chain aliphatic alcohols.

  由于空间位阻效应，长链脂肪醇与短链脂肪醇可能存在不同的毒性作用机理。

• these could be related to the difference in solubility of kgm, viscosity of the reaction system, steric hindrance, and granule structure of kgm with different mw values.

  kgm分子量对该反应的影响与不同分子量kgm的溶解度、体系粘度、空间位阻及颗粒形态等因素有关。

• the results show that herbicidal activity is closely related to the steric and electronic properties of the 5-position of the benzene ring.

  结果表明，此类磺酰脲类化合物的除草活性与苯环5位取代基的立体结构和电场性质密切相关。

• the effects of anionic polymer dispersant with different structures on the electrostatic and steric repulsion forces between particles in the aqueous suspension are mainly studied.

  着重研究了不同结构的阴离子聚合物分散剂对悬浮液中颗粒间的静电斥力和空间斥力的影响。

• the three-dimensional 「functional shape」 formed by the steric (physical) and electric fields of a drug molecule that cause the molecule’s pharmacological activity.

  一个药物分子经过物理或电场作用形成三维功能结构从而引起分子的药理活动。

• the ligand mixing reaction, the nonintegral metal- ligand ratio in compound compositions, the even-odd effect and related phenomena are analysed in the light of the steric packing of the ligands.

  从配体空间堆积效应分析了配体混合重排反应、金属—配体非整数比化学组成、奇偶效应等现象。

• there are mostly the electron effects and steric effects for the interatomic interactions in organic compounds.

  有机物分子中原子之间的相互作用主要有电子效应和空间效应。

• however, the steric effects related to the substituents of ps and eva cancels this catalytic behaviour.

  然而，有关的ps和eva取代基的空间位阻效应取消此催化行为。