单作用

Scavenging activities of seven natural flavonoids from elsholtzia bodinieri vaniot and artemisia ordosica kraschen for superoxide anion radicals was studied by single-sweep oscillopolarography.

用单扫描示波极谱法研究了从东紫苏和黑沙蒿中分离出的七种黄酮类化合物对超氧阴离子自由基的清除作用。

The essential oil has obvious inhibitory effect against Escherichia coli, Salmonella typhi, Salmonella enteritidis and Staphylococcus aureus.

抱茎蓼花的挥发油中主要以单萜和倍半萜为主，含量较高的组分是石竹烯（12.01 %）、3-己烯-1-醇(10.78%)、α-里哪醇(6.88%)、3-辛烯-3-醇（6.32%）等，其挥发油对大肠埃希菌、伤寒沙门菌、肠炎沙门菌和金黄色葡萄球菌有明显地抑制和灭活作用。

BCEF0083 is a new type of bioactive compounds from Entomogenous fungi, which acts both as an inhibitor of monoamine oxidase and an effctive free radical scavenger.

中文摘要： BCEF0083是从一种虫生真菌白僵菌代谢产物中提取的新型生物活性物质，具有一定的抗单胺氧化酶作用及较强的清除自由基活性。

Many pathogens of animal and plant, such as Erwinia cawtovora pv.carotovora and Pseudomonas aeruginosa, producing some kinds of virulence factors before attacking the host, and most of those virulence factors was modulated by the quorum-sensing system which relys on the secret of some small quorum sensing signals.

很多动植物的病原细菌，包括胡萝卜软腐欧文氏菌和铜绿假单胞菌等在侵染动植物有机体的过程中，首先利用细菌的群体感应机制诱导致病因子的表达，在致病因子的作用下侵染宿主。

The article adopted the method of orthogonal design using Polyethylene Glycol and Methacrylic Acid to esterify Polythylene-glycol-mono Methacrylate, then using PMA, MAA and Methacrylic Acid Sulfonic Sodium as raw material to synthesize Polycarboxylic type water-reducer.

用正交实验法研究了聚乙二醇和甲基丙烯酸酯化合成聚乙二醇单甲基丙烯酸酯的合成工艺，以该酯化物与MAA和甲基丙烯酸磺酸钠为原料，在引发剂的作用下合成聚羧酸系减水剂。

When methoxyethanol was used as the solvent,tantalum ethoxide can be chemically modified with acetic acid to producetantalum alkxo-acylate precursor, and therefore the hydrolysis of 〓can be slowed down.

在以乙二醇单甲醚为溶剂时，乙醇钽与醋酸作用生成乙醇钽的乙酰基配位化合物，可以减弱水解反应的进行。

Extracts of Evodia rutaecarpaBenth holds antibacterial effects on bacteria in vitro.

吴茱萸提取物对铜绿假单胞菌等临床常见细菌有一定抑制作用。

It improves the using rate of phosphorus in feeds , decreases the environment pollution of excretive phosphorus and debases the anti-nutritious function of phytates .

植酸酶作为一种单胃动物的饲料添加剂，可以提高植物饲料中磷的利用率，减少磷排泄对环境的污染，同时还能降低植酸的抗营养作用。

With a model of chronically compressed dorsal root ganglion, the present study was undertaken to test how the plasticity of sympathetic sensory coupling is and whether the coupling is mediated by intracellular messenger PKA by analysing extracellularly recorded spontaneous activity of single A fibers originating from the CCD neurons in vitro.

本实验在背根节慢性压迫模型上，采用离体灌流DRG和单纤维记录神经元自发放电的方法研究了初级感觉神经元的交感感觉耦联作用及其细胞内机制。

Experiment result demonstrates that its surface isn't oxidized by contrast with the stainless steel at 1 000 ℃. Under the single pulse high voltage, the film shows feeblish discharging characteristic after the bombardment of the high energy microparticles at hundreds times. This can increase the voltage holding capability and reduce the dynamic load of pulse power.

实验证明：在高达 10 0 0℃的温度下，相比不锈钢材料，薄膜表面几乎不被氧化；在单次脉冲高压作用下和在经受数百次高能微粒子轰击后，仍呈现出弱放电特征，既提高了耐压能力，又降低了脉冲电源的动态负载

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。