查询词典 parasitical

The formation mechanism of the absolute instability and gyrotron backward wave oscillations is analyzed, and the methods to suppress the parasitical modes are discussed.The nonlinear theory model of gyro-TWT is consummated by considering the influence of tapered magnetic field and waveguide radius, electron velocity spread, and waveguide loss on electron beam-wave interaction. The large-signal characteristic of gyro-TWT, such as launching loss and absolute instability, are also analyzed in detail. This work establishes the foundation for the development of a gyro-TWT amplifier.

重点研究了两段损耗波导结构和损耗陶瓷结构回旋行波管中的电子注-波互作用，分析了绝对不稳定性和回旋返波振荡的形成机制和抑制寄生模式的方法；完善了回旋行波管的非线性理论模型，并考虑了磁场和波导半径渐变、速度零散、波导损耗等因素对注-波互作用的影响；详细分析了发射损耗、相位稳定性等回旋行波管的大信号特征，为回旋行波管放大器的研制奠定了基础。

By TM images the linear structures, water system, the outer edge of Tianchi Volcano trachite are extracted. By the sensitivity of SAR images to geomorphology, the distribution of parasitical volcano cone and lava fornix around Tianchi volcano are interpreted. With the aerial photos the parasitical lava of Qixiangzhan, Baiyun and Bingchang stage are filtered. At the same time by orthogonal cross-course wavelet transform, texture analysis is carried on to ERS-2 SAR images, and the texture characters are filtered. On the basis of the spectrum character of multi-band of TM images, multi-band algebraic grouping is made, and the factor of texture character factor and band grouping of TM images are input to BP neural network classification model. The good classified results are received.

利用TM图像对线性构造、水系、天池火山粗面岩锥体外边缘的提取；利用SAR图像对地形敏感特性，提取了天池火山周围寄生火山锥体及熔岩穹丘的分布；利用航片对天池火山口周围的气象站期、白云期、冰场期等寄生喷发物进行了提取：同时利用正交小波变换对ERS-2 SAR图像进行了纹理分析，提取了纹理特征：根据TM图像不同波段的光谱特征，进行了波段代数组合，并把纹理特征参数与TM图像的波段组合及DEM一起输入BP神经元网络分类器，取得了较好的分类效果。

That man is simply living a parasitical life!

那个人过的简直就是寄生虫的生活。

With the worthless parasitical human beings gone, there was more for everyone to eat.

寄生的人类已经不在了，每只动物都可以分到更多的食物。

Finally, the parasitical parameter problem of post stage layout is analyzed and solved.

最后对于D类放大器后级版图设计中的寄生参数问题进行了分析并提出了切实可行的解决方法。

The character of radar system is restricted by parasitical AM.

对于压控振荡器在调频的同时也存在着寄生调幅，是不可避免的。

SOI-LDMOS is adopted by RF power amplifier because of its excellent isolation performance and small parasitical effect.

SOI-LDMOS以优良的隔离性能、较小的寄生效应被RF功率放大器所采用。

In this paper the layout design of a power transistor for motor drive IC chip has been present and how to reduce the parasitical parameter of layout is described in detail.

因此在它的驱动芯片版图设计中，传统的大功率输出管的设计并不能解决电机固有特性所带来的瞬间高压和大电流所造成的影响。

All these complicated factors inevitably affected the obligatory parasitical rust.

这些复杂的因素必然影响到专性寄生的锈菌。

In this paper,auther studied the principle on parasitical phenomenon about capacitor and provided the methods for solving the parasitical effects.

通过对各种电容元件进行测试及拆分研究，文章剖析了电容器产生寄生现象的原理，从而提出了减小电容器寄生效应的措施。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。