电荷密度波

Meantime, due to there are many fluctuating modes in plasma, so it is able to bring a new beam-wave interaction mechanism, by it people can invent some new type high power microwave apparatus.

高功率微波装置中的电流密度很大，空间电荷效应强烈，影响了功率的提高，克服空间电荷效应的有效方法是在高功率微波器件中填充等离子体，由于等离子体对空间电荷的中和作用，传输电流会大大提高，从而大幅度提高输出功率，同时由于等离子体中存在多种波动模式，有可能带来新的注波互作用机制，发展新型的高功率微波器件。

The authors compare the behaviors of space charge in dried and undried low density polyethylene and which doped with 0.5% Al_2O_3 powder via infrared spectrum method, thermogravimetry and the Pressure Wave Propagationmethod, and the water content is quantitatively measured.

作者通过红外吸收光谱法、热重分析法和压力波法，分别对低密度聚乙烯以及以0.5%Al2O3粉末掺杂的低密度聚乙烯在干燥前后的有关空间电荷行为进行了比较，定量给出水份含量和对应的空间电荷特性。

At first,the curve of charge distribution,ionizable state of nonisothermatity sphere,Was obtained by computer to calculate ionized state according to distribution data of temperature and dinsity within Earth. Secondly,the pussibility of microgravitational testonosphere,Within the isothermality sphere,was found by balance between pressure and volumetric forcein Earth's interior.The thickness is 1 000 km or so.Finally,the result come into commom use various geophysical process withi...

首先依据地球内部温度和密度不均匀分布数据，用计算机计算它的电离状态，得到非等温分层电离状态的电荷分布曲线；其次从地球内部存在的流体压力与两类体积力：重力和静电力的平衡方程讨论中，发现在某一等温层内可能存在微重力构造圈，其厚度约为1000km左右；最后在地学研究向整体化和深部化发展趋势下，预期这个结果将有助于理解地球深部发生的各种物理过程且与地震S波在核－幔之间层中消失观测事实相一致。

Further more, the simplified analysis method on stressed-skin effect of corrugated steel sheet is also discussed in detail.

此外还比较详细地探讨了蒙皮效应的简化分析方法。

If I had known her telephone number,I would have called her.

要是我知道她的电话号码，我就打电话给她了。