染料母核和碘翁阳离子的结构均对离子对体系的性质有影响。
Ion pairs with different structure of either dye anion or onium cation have different properties.
黄酮类化合物是一类低分子天然植物成分，这类化合物具有共同的母核c6 - C3 - C6。
The flavonoid is a kind of low molecular natural plant ingredient, and this kind of compound has common parent nucleus C6-C3-C6.
本发明公开了一种具有如式i所示的母核结构的化合物在制备MMP - 9酶活性抑制剂中的用途。
The invention discloses application of a compound which is shown in a formula I and has a mother nucleus structure in preparing an MMP-9 enzymatic activity inhibitor.
本论文系统地研究了利用串联反应与多组分反应合成一系列结构较为复杂、新颖，部分为原创性母核的杂环化合物。
In this thesis, a series of novel heterocyclic compounds involving in more complex structures and in part original nucleus were synthesized based on domino reactions and MCRs.
鉴于大黄酚具有大黄酸分子的基本母核，本文以植物中大黄酚为起始原料，经乙酰化、氧化和脱乙酰反应后制得大黄酸。
Seeing that Chrysophanol has the same basic parent structure with Rhein, Rhein was synthesized through acetylation, oxidation and deacetylation reaction taking Chrysophanol as raw material.
总酚提 取物主要包括对羟基苯乙醇、3、4-二羟基苯乙醇、红景天苷以及以 其为母核的糖苷类化合物和其它衍生物。
The total phenol extract mainly contains hydroxyl mandelic, 3, 4-dihydroxy phenylethyl alcohol, salidroside and indicant compound and other derivatives with salidroside as the mother nucleus.
基于对实际点焊接头硬度分布的分析，建立了包括熔核、热影响区和母材的单点点焊搭接接头计算模型。
Based on the hardness analyses of actual spot welded joints, a computational model that consists of nugget, HAZ and base metal is established for the single point spot welded lap joints.
电阻点焊接头的焊接强度由母材和熔核的材料属性及几何特征决定。
Strength of resistance spot weld is determined by the physical attributes of weldment including material and geometric issues.
结果表明：储能焊能够实现TC4钛合金薄板的快速凝固焊接，焊接接头由熔核和熔核向母材过渡的熔合区（线）组成。
The results show that the welding of TC4 can be realized by capacitor discharge welding. The joint microstructure consists of nugget zone and semi-melt zone.
结果表明：储能焊能够实现TC4钛合金薄板的快速凝固焊接，焊接接头由熔核和熔核向母材过渡的熔合区（线）组成。
The results show that the welding of TC4 can be realized by capacitor discharge welding. The joint microstructure consists of nugget zone and semi-melt zone.
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