Isolation and Identification of Chemical Constituents of Botanical Pesticides WCT

1、

Study on Chemical Constituents of Botanical Antivirus Agent WCT

植物源病毒抑制物WCT化学成分初步研究

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2、

Mechanism of Control of Tobacco Mosaic Virus by Antivirus Agent WCT-ⅱ from Plants

植物源病毒抑制物WCT-Ⅱ防治烟草花叶病毒的机理初探

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3、

Research on Application and Antiviral Mechanism of WCT-ⅱ Extracted from the Plant

植物源抗病毒物质WCT-Ⅱ作用机理及应用研究

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4、

After liquid phase sintering, the WCu composites have been deformed by hot hydrostatic extrusion and subsequent hot extrusion, during which the plastic deformation of tungsten particle is not obvious.

通过对W-40wt%Cu液相烧结坯进行一次热静液挤压和后续的热挤压变形的实验，发现钨铜材料在一次挤压和二次挤压后，其钨颗粒并没有明显的大的塑性变形。

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5、

WCu composites have been used widely in the fields of electrical materials 、 electron 、 war industry and spaceflight due to their high strength and hardness, good electrical and erosion resistance.

W-Cu复合材料具有良好的导电性、抗熔焊性和高强度、高硬度等优点，目前在电工材料、电子、军工、航天等领域有着广泛的应用。

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6、

The change of conductivity and hardness of WCu composite after deformation has been investigated. The results show that the hardness is increased greatly, however, the conductivity is decreased.

本文还对钨铜材料的导电率、硬度的变化进行了研究，结果表明，二次挤压后的钨铜材料的硬度有明显提高，而导电性能反而有所下降。

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7、

The comprehensive properties of WCu alloys with doping 0.3% B, 2.0% Nb, 1.5% Ce achieved the best by comparing.

通过综合比较，掺杂0.3%的硼、2.0%的铌、1.5%的铈的WCu合金综合性能最佳。

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8、

Investigation of WCu Electrode Erosion Morphology Under Impulse Arcs

脉冲电弧对钨铜电极表面侵蚀形态的研究

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9、

Effect of doping on electrical arc characteristic of WCu electrical contact materials

掺杂对WCu电触头材料电弧特性的影响

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10、

COPPER Study of Manufacturing Process of WCu Electrode Materials for Electric Spark Machining

电火花加工用钨铜电极制造工艺研究

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11、

Chinese National Committee for WDC

世界数据中心中国国家协调委员会

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12、

In fact, IDSF never takes action in reaction to WDC.

in reaction to以应对事实上，IDSF从不对WDC的行为进行还击。

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13、

Based on the optimal λ value, the differentiation of WDC and another prediction method PeC is discussed.

基于λ的最佳值，WDC和另一种方法PeC的区别被讨论。

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14、

That puts them at B, since WDC won't allow for ties.

所以才把他们放到了B中，因为WDC不允许出现平局。

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15、

In recent years, the Western Development Drive ( WDD) has been carried out, however, the problem of lack of water has still not been solved fundamentally.

近年来，西部大开发已经轰轰烈烈地开展了，然而缺水的问题仍然没有从根本上得到解决。

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16、

The WDD type pseudo-ramdom multi-function transmitter for the electrical method

WDD型伪随机多功能电法发送机研制

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17、

The expressions and tensor form coordinate transform matrix of the WDF ( WCTM) is given and expressed in terms of the ABCD ray transform matrix elements of the system.

给出了用系统的ABCD矩阵元表示的用于进行此坐标变换的表达式和等价的张量形式的WDF的坐标变换矩阵（WCTM）。

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18、

By using the Wigner distribution function ( WDF) method, the transformation properties of a Cosine-Gaussian beam in the fractional Fourier transform plane are studied.

利用Wigner分布函数的方法，研究了余弦-高斯光束的分数傅里叶变换特性。

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19、

Is based on the WDF to write a virtual disk drive, some memory with a virtual hard disk ( the actual silver does not exist).

是基于WDF写的一个实现虚拟磁盘驱动，用部分内存虚拟出一个硬盘（实际不存在的银盘）。

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20、

In addition, WDF set up three day care centers, provided sewing machines, bicycles and water pumps to help people resume agricultural activity.

此外，WDF还建立了三个托儿所，提供了缝纫机、自行车和水泵，以帮助人们重新开始农业活动。

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