频率

The results implied that two of these three genes, Glb3s2 and Cht4, when transiently expressed in leaf epidermal cells of susceptible wheat variety, can partially inhibit penetration of conidiospores and formation of haustoria, and to some extent increase the resistance of expression cells to powdery mildew.

结果表明，小麦几丁质酶基因Cht4（侵入频率为18.3%，对照为25.04%）和小麦肛1，3葡聚糖苷酶基因Glb3s2（侵入频率为19.63%，对照为24.63%）在感病小麦品种叶片表皮细胞中的瞬间表达，对白粉病菌侵入和吸器形成均有抑制作用，在一定程度上增强了表达细胞对白粉病菌的抗性。

The two drums transmissions are intercrossed for more reasonable weight distribution, realizing higher compaction quality in operation.3.Dual frequency and amplitudes vibration system may obtain optimal compaction for different quality and course materials.

振动系统：双频率和双振幅设置，保证了整机在压实不同性质、不同厚度的铺层时，均可达到最佳的压实效果；可实现单振、双振、静碾等多种选择振动模式，并可在液压元件长期使用磨损后进行频率的补偿调节。

Free-running frequencies of the oscillators are set slightly below the horizontal and vertical pulse rates, and the stripped pulses are used to trigger the oscillators prematurely and thus to synchronize them to the line and half-frame rates half-frame because United States television interlaces the

将振荡器的自由振荡频率设置得略低于水平和垂直脉冲频率，剥离出来的脉冲用于提前触发振荡器从而使振荡器与行频和半帧频同步（由于美国电视在交替的垂直扫描时进行隔行扫描，所以是半帧频）。

When infrared ray irradiates to the surface of material and radiating frequency is same as material molecular frequency, the radiating energy is strongly absorbed by the material.

红外辐射是辐射物体以电磁波的方式传播内能的过程，当红外线照射到某一物体时，如果入射的红外线频率和物体分子固有频率相一致，则物质分子就会表现出对红外线的强烈吸收，吸收的那一部分能量就转化为分子的热运动，使物体温度升高，达到加热干燥的目的。

The dynamical characteristics of a low voltage MicroGrid from grid-connected mode to islanded mode with different distributed generation configuration schemes are analyzed by using simulation method,and the corresponding changing laws of each DG's power,voltage and frequency of MicroGrid are obtained.

通过算例仿真研究了不同分布式电源配置方案下低压微网从并网模式向孤网模式转换的动态运行特性，获得了分布式电源的功率、微网电压和频率的变化规律。如果选择微型燃气轮机作为微网的功率支撑手段，在微网从并网向孤网过渡过程中，系统频率波动较大，且部分分布式电源有可能在低频保护动作下与电网隔离，不利于微网的稳定运行；增加储能设备后，储能设备对于微网的稳定运行可发挥重要的作用。

When microgrid is operated in islanded mode, VSGs can be divided into non-frequency regulation units and frequency regulation units, the former can generate power and participates in primary frequency control according to dispatching to mitigate system frequency deviation due to disturbances; the latter can offer referential voltage of microgrid and use secondary frequency regulation to implement no-error frequency control.

微电网孤岛运行时，将虚拟同步发电机分为非调频发电单元和调频发电单元，前者既能按照功率调度指令发电，又能参与一次调频，缓解扰动情况下系统频率的波动，后者提供微电网参考电压，并利用二次调频实现频率的无差控制。

The disadvantages of the conventional active frequency drift method in various load conditions are analyzed for islanding prevention.

本文详细分析了传统有源频率扰动法在孤岛效应发生时，在不同负载特性下并网逆变器输出频率的变化特点和不足。

First it proposes a method based on chirp rate jittering, through the process of jittering and thresholding, coherent repeat jammings including terrain scattered jamming are greatly suppressed, which displays the potential use for real environment.

针对空域抗干扰技术难于抑制场景散射干扰的缺点，提出了一种基于调频率极性捷变和限幅过程相结合的抗干扰方法，通过脉间捷变调频率极性，并对干扰的匹配结果进行限幅，大大提高了抗干扰效果。

The frequencies of both the MILOs are the same 3.9GHz. In the primary experimental studies of the CV-MILO and CD-MILO, the microwave power, the frequency, and the mode are measured, and the relations between the microwave radiation and the beam parameters are investigated.

初步实验结果为：CD-MILO在550kV、43kA的束流情况下，测量到功率为300MW、频率为5GHz的TEM模微波输出，效率1.3％；而与其相应的CV-MILO在540kV、42kA的束流情况下，测量到的微波功率提高到510MW，效率为2.3％，其模式和频率与CD-MILO一致。

The seeds of Adzuki bean were irradiated by 60 Co γ ray of 0～700Gy.The results showed that:(1)The sub\|lethal dose(LD 50 )was 389Gy and the early seedling leaf at M\-1 showed incised,chlorotic,yellow,mosaicand curly edge.The absorbed dose was related with the rate of misshaped leaf.Chromosomal aberration, chromosome bridge and fragment of M\-1 in the tip were observed.If the seed was irradiated with 400Gy,the rate of abnormal cell at the root was more than 10%.The relationship between pollen fertility and irradiation dose was negative correlated.

本试验研究结果表明：60 Coγ射线辐照小豆种子的半致死剂量平均为 3 89Gy ，且M1生长初期叶片性状有明显的叶面缺刻、叶色缺绿、叶形不对称、叶缘卷曲、花叶、黄叶等致变现象，各种畸型叶出现频率与辐照剂量大小有关；M1根尖细胞中有多种染色体畸变类型，以染色体桥和断片频率较高，辐照剂量在 40 0Gy以上时根尖细胞异常率达 1 0 %以上；植株花粉育性与辐照剂量呈极显著负相关，京农 2号植株花粉育性达 5 0 %时的辐照剂量为 3 78Gy。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。