covalent

美 [?k??'ve?l?nt] 　英 [?k??'ve?l?nt]

• adj.共價的
• 網(wǎng)絡共階的；共價法；共價型

英漢雙解

英漢解釋

adj.

1. 〔化〕共價

英英解釋

adj.	1. describes a chemical bond in which the attractive force between atoms is created by the sharing of electrons

例句

Silicon carbide was a strong covalent bond compound, which had favorable high temperature, electricity, mechanism and chemistry capability.

碳化硅材料是共價鍵極強的化合物，具有良好的高溫性能、電性能、機械性能和化學性能。

wherein the compound of formula I further comprises at least one covalent bond with a biotin residue or an analogue thereof.

其中式I化合物進一步含有至少一個連接生物素殘基或其類似物的共價鍵。

Peroxide: Any of a class of chemical compounds in which two oxygen atoms are linked by a single covalent bond.

過氧化物：任何由兩個氧原子以單個共價鍵相互結(jié)合在一起的一類化合物。

The covalent bonding to the polymer chain provided stability towards solvents and a migration stabilizing effect.

從共價鍵到聚合物鏈的轉(zhuǎn)變使其在介質(zhì)中更穩(wěn)定，更不易遷移和揮發(fā)。

High-molecular-weight components can be formed by the formation of SPI intermolecular covalent bonds through modification with MTG .

經(jīng)MTG改性后SPI可在分子間生成共價鍵，形成相對分子量較大的聚合物。

For the last 100 years, they have done that mostly by making and breaking the strong covalent bonds that form when atoms share electrons.

過去百年來，他們大多靠形成與破壞原子共用電子時所產(chǎn)生的強大共價鍵來達成目標。

A covalent bond formed by a shared pair of electrons (see bond).

共享一對電子，形成的共價鍵（見鍵）。

Metal atoms, being strong electron donors, do not bond by either ionic or covalent processes.

金屬原子作為強電子供體既不通過離子作用也不由共價作用成鍵。

A pair of electrons shared between two atoms in a covalent bond.

在共價鍵中被兩個原子所共有的一對電子。

Objective: To confirm whether silybin lecithin complex(SLC) is combined by covalent bonds or other sub bonds.

前言：目的：確定水飛薊賓卵磷脂復合物（SLC）中水飛薊賓與卵磷脂之間是以共價鍵還是以其他次級鍵結(jié)合。

Disulfide bridge In PROTEINS, a covalent bond formed between the sulfhydryl (-SH) groups of different cysteine molecules.

在蛋白質(zhì)中兩個半胱氨酸殘基的兩個巰基之間形成的共價鍵。

Chemical modification as manifested in crosslinked enzyme crystal, covalent attachment of polymers and surface modification retain useful.

尤其在化學修飾方面：交聯(lián)酶結(jié)晶技術、多聚體共價結(jié)合以及表面修飾等成果顯著。

This use of the materials containing Covalent form by initiating energy form of light oil mask.

這種利用該材料含有的共價鍵通過能量引發(fā)聚合形式而形成光油面膜。

The main reason of shrinkage stress during curing period is the change from distance between monomer molecules to covalent distance .

樹脂固化時收縮應力的主要原因是單體之間的分子間距離縮短變?yōu)?/c>共價距離。

The methylation of histone lysine is an important covalent modification at its tails and plays a key role in epigenetic regulation.

組蛋白賴氨酸甲基化是組蛋白尾段發(fā)生的一種重要共價修飾，在基因的表觀遺傳轉(zhuǎn)錄調(diào)控中起著關鍵的作用。

Further study is needed before the origin of the covalent bond can be considered a settled question.

需進一步深入研究方能解決共價鍵的起源問題。

It shows that the high Tc superconductors are the crystals with both ionic and covalent properties.

結(jié)果表明，高溫超導材料屬于具有部分離子性和部分共價性的晶體。

Chemical intuition tells us that ionic terms should make substantially less contribution to the wave function than covalent terms.

化學的直觀告訴我們離子項對波函數(shù)的貢獻比共價項小得多。

Covalent modifications of histone tails play a key role in the regulation of chromatin structure and control of transcriptional activity.

染色體組蛋白的共價修飾在調(diào)節(jié)染色體結(jié)構(gòu)，控制基因的轉(zhuǎn)錄等方面發(fā)揮重要的作用。

Covalent modification of histones on chromatin is a dynamic mechanism by which various nuclear processes are regulated.

染色質(zhì)上組蛋白的共價修飾是一個動態(tài)的機制，多種細胞核過程通過該機制被調(diào)控。

Another is the single covalent bond also called a single bond. This is when two atoms share a single pair of electrons.

一種是共價單鍵，也可稱為單鍵，由兩個原子共享一對價電子形成。

A nonpolar covalent bond happens when both atoms have the same strength of electric attraction for the shared electrons.

當兩個原子對共享電子的引力相同時形成非極性共價鍵。

The application of dynamic covalent chemistry into polymer gels provides an possible method to overcome this difficulty.

動態(tài)共價化學在聚合物凝膠中的應用為突破這一難點提供可能的途徑。

Covalent modifications to histone proteins play a critical role in regulating gene transcription.

組蛋白的共價修飾在調(diào)控基因轉(zhuǎn)錄中起著關鍵性的作用。

All acids are covalent compounds in which the atoms are held together by a sharing of electrons.

所有酸中的原子是由電子舉行一起分享共價化合物。

Surface modification was developed via self-polymerization of dopamine and covalent graft of heparin.

方法：通過多巴胺的自聚合和肝素的共價接枝對純鈦進行表面修飾。

The attraction between covalent bonds molecules is the interaction of electrical dipole moment.

共價鍵分子間的吸引力是電偶極矩的相互作用。

Coordinate covalent bond with the formation conditions of the concept.

配位共價鍵的概念與形成條件。

A polar covalent bond happens when one electron has a stronger electrical attraction for the shared electrons than the other atom(s).

當一個原子對共享電子的電吸引強于其它原子時，形成極性共價鍵。

In one aspect, the invention provides covalent conjugates between artemisinin related endoperoxides and iron-carrying proteins.

本發(fā)明在一個方面中提供了青蒿素相關性內(nèi)過氧化物與攜帶鐵的蛋白質(zhì)之間的共價綴合物。

Antibody can be linked to liposome particles by covalent binding.

抗體能通過共價鍵結(jié)合在脂質(zhì)體顆粒上。

DNA methylation is the unique natural covalent modification of vertebrate animals.

DNA甲基化是脊椎動物DNA唯一的自然共價修飾方式。

Both ionic and covalent bonds arise from the tendency of atoms to attain this stable configuration of electrons .

離子鍵和共價鍵都是由于原子要達到這個穩(wěn)定電子構(gòu)型而形成的。

Covalent histone modifications and ATP-dependent chromatin remodeling play important roles in the process of DNA repair.

其中，組蛋白的共價修飾和ATP-依賴的染色質(zhì)重塑通過改變染色質(zhì)的結(jié)構(gòu)，對DNA修復進程起著關鍵的調(diào)控作用。

The complete covalent structure is tailed the primary structure (V structure).

完整的共價鍵結(jié)構(gòu)尾的主要結(jié)構(gòu)（五結(jié)構(gòu)）。

FTIR analyses showed that the ligands are linked by covalent bond on membranes.

FTIR結(jié)果分析表明，配基與復合膜的結(jié)合均是共價鍵結(jié)合；

This technique works almost exclusively on samples with covalent bonds.

這種技術專門用在共價鍵的分析上，而且主要用于有機化學中。

anions and cations have opposite electrostatic charges. their attraction to each other forms covalent bonds.

陰離子和陽離子有相反的靜電荷。他們通過共價鍵相互吸引。

Modern valence bond theory and hybrid orbital theory to explain the covalent bond.

用現(xiàn)代價鍵理論和雜化軌道理論來說明共價鍵。

Additionally , covalent modifications have effect on the mobility of some proteins.

另外蛋白質(zhì)的共價修飾可對某些蛋白質(zhì)的運動產(chǎn)生影響。