摘要：【中文】本发明公开一种高断裂伸长率PMI泡沫及其制备方法，包括如下步骤：(1)将30‑70重量份甲基丙烯腈、30‑70重量份甲基丙烯酸及相关助剂混合均匀，搅拌溶解；(2)将改性纳米粒子加入到反应液中，高速分散；(3)将反应分散液注入模具，反应得到聚合物板材；(4)将聚合物板材加热发泡得到一种高断裂伸长率PMI泡沫板。本发明制备得到的聚(甲基)丙烯酰亚胺泡沫的断裂伸长率，相对于常规泡沫明显提高，且热力学性能基本和改性前相当。 【EN】The invention discloses PMI foam with high elongation at break and a preparation method thereof, comprising the following steps: (1) uniformly mixing 30-70 parts by weight of methacrylonitrile, 30-70 parts by weight of methacrylic acid and related auxiliaries, and stirring for dissolving; (2) adding the modified nano particles into the reaction solution, and dispersing at a high speed; (3) injecting the reaction dispersion liquid into a mold, and reacting to obtain a polymer plate; (4) heating and foaming the polymer plate to obtain the PMI foam plate with high elongation at break. Compared with the conventional foam, the poly (methyl) acrylimide foam prepared by the invention has obviously improved elongation at break and basically equivalent thermodynamic property to that before modification.

摘要：【中文】本发明公开了一种基于山区河流分级的河岸带植被覆盖度提取方法，包括：获取模型所需山区河流各点的坡度、坡向及其变化率、高程等，进而提取水系特征；对所需山区河流进行分级；采用流域面积对应的边界裁剪预处理后的遥感数据影像，得到整个所需山区河流流域的遥感数据影像；获取各个河段的植被覆盖度，计算所需山区河流的河岸带植被覆盖度；根据流域植被覆盖度多年变化率估计植被覆盖度变化趋势。本发明能够方便迅速地获得山区河流的河岸带植被覆盖度，避免耗费过多人力物力，提高精度，同时能够反映山区河流不同河段的生态环境，属于生态河流评价的重要部分，具有很强的实用性和广泛的适用性。 【EN】The invention discloses a method for extracting vegetation coverage of a river bank based on mountain river classification, which comprises the following steps: acquiring the gradient, the slope direction, the change rate, the elevation and the like of each point of the mountain river required by the model, and further extracting water system characteristics; grading the required mountain river; cutting the preprocessed remote sensing data image by adopting a boundary corresponding to the river basin area to obtain a remote sensing data image of the river basin of the whole needed mountain area; acquiring vegetation coverage of each river section, and calculating the vegetation coverage of the river bank zone of the river in the required mountain area; and estimating the vegetation coverage change trend according to the annual change rate of the vegetation coverage of the drainage basin. The method can conveniently and rapidly obtain the vegetation coverage of the river bank zone of the mountain river, avoid consuming too much manpower and material resources, improve the precision, reflect the ecological environment of different river sections of the mountain river, belong to the important part of ecological river evaluation, and have very strong practicability and wide applicability.

摘要：【中文】本发明涉及一种用于高速接口电路的自适应电荷泵锁相环，包括锁相环路、辅助电路，所述辅助电路包括输入时钟缓冲器B101、时钟计数器B102、电压检测模块B106、低压差线性稳压器B107、偏置电路B108、与门G111、开关；本发明利用自适应电路结构提高锁相环路的稳定性、减小锁相环输出时钟信号的噪声，并且引入电压检测模块实时监测压控振荡器控制电压，如果压控振荡器工作在过高或过低的频率上，则使锁相环暂停工作，并将压控振荡器重置在合适的工作点上再重启锁相环，防止锁相环锁定在错误的频率点处。 【EN】The invention relates to a self-adaptive charge pump phase-locked loop for a high-speed interface circuit, which comprises a phase-locked loop and an auxiliary circuit, wherein the auxiliary circuit comprises an input clock buffer B101, a clock counter B102, a voltage detection module B106, a low-dropout linear regulator B107, a bias circuit B108, an AND gate G111 and a switch; the invention improves the stability of the phase-locked loop by using the self-adaptive circuit structure, reduces the noise of the output clock signal of the phase-locked loop, introduces the voltage detection module to monitor the control voltage of the voltage-controlled oscillator in real time, if the voltage-controlled oscillator works at an overhigh or overlow frequency, the phase-locked loop stops working, resets the voltage-controlled oscillator at a proper working point and restarts the phase-locked loop, and prevents the phase-locked loop from being locked at a wrong frequency point.

摘要：【中文】一种抗单粒子加固的CML发送器，包括：数字三模处理模块、DR偏置模块、SR偏置模块、表决‑延时‑差分模块、输出上拉模块等模块。采用多模备份的方式对内部模块进行抗单粒子加固，可以保证空间应用的可靠性。此外，本发明的CML发送器的SlewRate是可控制的，可以改善信号质量，保证可靠的数据传输。 【EN】A single event hardening resistant CML transmitter comprising: the digital three-mode bias circuit comprises a digital three-mode processing module, a DR bias module, an SR bias module, a voting-delay-difference module, an output pull-up module and the like. And the multi-mode backup mode is adopted to reinforce the internal module in the event of single event resistance, so that the reliability of space application can be ensured. In addition, the SlewRate of the CML transmitter is controllable, so that the signal quality can be improved, and reliable data transmission is ensured.