heterocyclic ring
英
美
网络 杂环
英英释义
noun
- a ring of atoms of more than one kind
双语例句
- A chemical compound in the form of a heterocyclic ring, containing a metal ion attached by coordinate bonds to at least two nonmetal ions.
杂环化学复合物，由一个金属离子与两个或两个以上非金属离子构成配位键。 - Triazine is a type of heterocyclic organic compounds, it is important to ring nitrogen organic chemical raw materials.
是一种三嗪类含氮杂环有机化合物，重要的氮杂环有机化工原料。 - Oxazoline, a five-membered heterocyclic ring containing both N and O coordinated atoms, is an excellent class among nitrogen-containing chiral ligands.
其中，同时含有N和O的五元杂环的恶唑啉配体是比较优秀的一类含氮手性配体。 - Coupling rule of proton in drugs containing heterocyclic nitrogen ring
药物结构中氮杂环质子的偶合现象 - Furthermore, the toxicity and potential mutagenicity of nitrogen heterocyclic compounds increased with the increase of ring number and nitrogen ( N) atom.
含氮杂环化合物的毒性和致突变风险也随着环的数目和环内氮含量增加而增加。 - Heterocyclic analogs of 3-desoxyequilenin in which the D ring is replaced by a pyrazolone ring have been prepared.
本文报道几个D环为吡唑酮替代的3-去氧-去氢雌马甾酚酮的杂环类似物的合成。 - The effects of such the heterocyclic aryl rings effects, double six-membered ring skeleton and the position of the substituents on the optoelectronic properties of these compounds were investigated in detail.
主要研究了取代基效应、取代基位置效应、双六元环骨架和不同芳杂环对该类二芳烯化合物的光电性质影响。 - Porphyrin is a kind of organic heterocyclic compounds which contains large ring conjugate structure and possesses aromaticity.
卟啉是一类具有大环共轭结构和芳香性的有机杂环化合物。 - Systhesis of some systemic fungicides containing nitrogen heterocyclic ring
含氮杂环类内吸杀菌剂的合成 - In EIMS there are many frame-rearrangement ion peaks. The cleavage of C-O, C-F. C-CF3 bonds and the formation of five-or four-membered heterocyclic ring ions containing nitrogen by losing CO are major mass spectrometric characters.
在EIMS中，均存在较多的骨架重排离子峰，其中CO，CF，CCF3，键断裂及失去CO形成的五元，四元含氮杂环离子是重要质谱特征。