1、

Two main select markers were auxotroph and drug resistance.

筛选标记主要有营养缺陷型、药物抗性标记;

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2、

The expression of poplar disease resistance in callus tissues is greatly affected by concentration of auxins and cytokinins in the medium, inoculum density and temperature.

来自抗病无性系的愈伤组织也表现抗病。愈伤组织抗病性表达受培养基的激素浓度及比例、病原菌的接种量和接种温度影响较大;

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3、

In this model the rough surface of the contact is idealized as a plane with some asperities. The sticking effect is also considered. The variation of contact resistance with contact force is calculated.

模型将粗糙的触头表面理想化为多微丘结构,并考虑了表面粘连效应,给出了接触电阻与接触力之间的变化关系。

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4、

The paper describes the features and installation of the power supply arrestor and the signal arrestor, as well as the calculation and selection of the resistance of the grounded wire for effective lightning protection.

简单介绍电源防雷器和信号防雷器的性能和安装,以及接地线阻抗的简单计算和正确选用,达到有效防雷。

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5、

The location and quantity of arrestor and impulse grounding resistance of towers has direct influence on lighting overvoltage.

变电站避雷器安装位置和数量及输电线终端塔的接地电阻对雷电过电压有着直接的影响。

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6、

Resistance Current Measurement of Zinc Oxide Surge Arrestor Under Operating Voltage

氧化锌避雷器运行电压下测量阻性电流

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7、

Fatigue specimens of the details were made in accordance with the patterns of the arris weld. The fatigue resistance curves and relevant statistical parameters are obtained through the analysis of the fatigue experiments and the FEM analysis.

通过疲劳试验研究和有限元分析,确定了该细节的疲劳抗力曲线和有关的统计参数,并建立了棱角焊缝构造细节疲劳破坏模型。

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8、

These mutants showed arsenate resistance and significant reduction of Pi uptake ability.

这些等位突变体都具有抗砷的表型且磷吸收能力显著降低。

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9、

Toxic effect of arsenite on the expression of liver multidrug resistance-associated protein 2 in rat

砷对大鼠肝脏多药耐药相关蛋白2影响的研究

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10、

METHODS The contraction and relaxation of resistance vessels to stimuli were investigated in tail artery and mesenteric arteriole bed.

方法两肾一夹法制备RH大鼠模型,观察肠系膜动脉床和尾动脉对收缩和舒张刺激的反应性。

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11、

Breeders try to incorporate resistance genes into farm crops to make them disease tolerant.

育种工作者想方设法把抗性基因转移到农作物上去,使作物有抗病性.

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12、

Coil resistance is determined by the cross-sectional area and length of the wire used the coil.

线圈电阻是由线圈导线的横截面积和长度决定的.

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13、

This is the electrical resistance per unit length and cross-sectional area of a magnetic core.

具有单位截面积和单位长度的磁性材料的电阻.

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14、

This shows that the resistance of an electric conductor is inversely proportional to its cross-sectional area.

这表明,导体电阻的大小与导体 横截面 的大小成反比.

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15、

After successive generations of artificial selection, some good economic and genetic traits are basically stable to offspring, such as faster growth, more adaptability and higher nutritional value, easier to raise and breed, disease resistance and so on.

经过连续多代人工选育,得到生长速度快、适应性强、营养价值高、易养易繁、抗病力强等优良经济性状,且遗传性状基本稳定的后代。

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16、
17、

Therefore, it has practical significance to study the role of ascorbate in resistance and its mechanism.

因此研究抗坏血酸在参与植物的抗性中的作用及其机理无疑具有重要的现实意义。

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18、

From 872 clones asexually propagated 3 times from the callus treated with 2% EMS, 7 clones resistant to 3. 5 mmol oxalic acid were screened out, and 5 out of 7 clones were stable in resistance.

经2%EMS处理的愈伤组织扩增3代后,从872块愈伤组织中.筛选到7块抗(耐)3.5mmol草酸的愈伤组织,其中有5块抗性稳定。

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19、

The relationship between serum alanine aminotransferase, aspartate aminotransferase and metabolic disorder, insulin resistance in type 2 diabetes

2型糖尿病患者丙氨酸氨基转移酶、天冬氨酸氨基转移酶水平与代谢紊乱、胰岛素抵抗之间的关系

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20、

Advanced tire designs can cut rolling resistance.

高级的轮胎设计能将滚动阻力减半.

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