查询词典 airframe

A novel direction of arrival and polarization estimation of electromagnetic vector sensors mounted on the airframe is proposed based on biquaternion. The signal processing model for EM-sensor mounted on the airframe is made by biquaternion and then the eigenvalue decomposition of spectral matrix is obtained by means of the EVD of its quaternion adjoint matrix. The memory requirement for data is reduced, and more accurate estimation result is gotten by deducing the stronger orthogonality constraint between the sin- gal and noise subspaces on the field of biquaternion. The performance of the new algorithm is confirmed through numerical examples.

针对机载电磁矢量传感器阵列DOA和极化参数估计问题，提出了一种基于复四元数估计方法，该算法利用四元数建立机载电磁矢量传感器阵列信号处理模型，然后利用四元数联合矩阵的特征分解得到阵列数据相关矩阵的特征分解，一方面使得计算过程中数据的贮存量大大减少，另一方面通过推导得到信号子空间和噪声子空间在四元数域上的正交性从而使DOA和极化参数佑计的精度更高，仿真证实了本算法的有效性。

The demands of modern technique have a growing pressure for improvement of radome as a protection in front of antenna, which include the aerodynamical qualities, structural requirements of the airframe and excellent electromagnetic characters.

摘要——现代技术对于作为防护层安装在雷达天线前面的雷达罩提出了很高的要求，除机械特性和气动特性以外，还必须具有良好的电气性能。

It is one of the richest protein in airframe, occupy total protein about 25%, 30%.

它是机体中最丰富的蛋白质之一，约占总蛋白质的25%—30%。

If you have one, you will find that a 7 airframe coupler works better than a flat surface.

如果你有一，你会发现一个7 机身耦合工程总比一个平面上。

So far for the airframe design, and now let's have a look at the power plant.

迄今为止的机身设计，现在让我们在电厂看看。

About 50% of airframe has been renewed.

此外，大约五成的机身接受了更新。

We are committed to being the global partner of choice for integrated major airframe structures.

我们承诺沃特将是提供综合飞机主要结构的全球最佳合作伙伴。

I have little doubt that many other airframe parts are now made in China for Western airliners.

我悄悄地怀疑许多西方客机机身的其他部件都是中国造的。

The blood pressure of.1 of pathology physiology mechanism that SAS causes CVD breathes time-out to be able to bring about airframe in elevatory Morpheus anoxic, sympathetic is excessive and excited, element of serous catechu phenolic amine, kidney and hemal endodermis element are elevatory, bring about hemal easy of hemal convulsion; to shrink the function is disorder, can make blood-vessel flowing flesh happening reframes and fleshy, systemic blood-vessel obstruction adds element of the kidney when; is chronic and anoxic, system of hemal and nervous element is activationed, bring about blood pressure to lift. Obstruction of way of energy of life of patient of OSAS of disease of blood of 1.2 low oxygen increases, cause air current to interrupt, breath pauses, at the same time airframe gets used to low oxygen environment gradually, breathing centre drops to low oxygen and sensitivity of disease of blood of tall carbonic acid, breath suspends a frequency increasing, farther aggravating airframe is anoxic. 1.3 heads are self-adjusting the function drops normal person changes quickly in systematic circulation blood pressure when, the head can be passed adjust independently functional generation protects effect, make change of cerebral blood flow not big.

SAS诱发CVD的病理生理机制。1血压升高睡眠中呼吸暂停可导致机体缺氧，交感神经过度兴奋，血浆儿茶酚胺、肾素以及血管内皮素升高，导致血管痉挛；血管舒缩功能紊乱，可使血管平滑肌发生重构和肥厚，全身血管阻力增加；慢性缺氧时肾素—血管紧张素系统被激活，导致血压升高。1.2低氧血症OSAS患者气道阻力增加，造成气流中断、呼吸暂停，同时机体逐渐适应低氧环境，呼吸中枢对低氧和高碳酸血症敏感性下降，呼吸暂停次数增加，进一步加重机体缺氧。1.3脑自动调节功能下降正常人在体循环血压快速变化时，脑可通过自主调节功能产生保护效应，使脑血流量变化不大。

This compressor but with dry device (adsorptive type, refrigerant type or draw type) form a complete set, make inside the dynamo outer circulation of hydric implementation airframe, ensure adsorptive type is dry the second birth of device is dry, although machine or turning condition stop to fall in the dynamo hydric still can be outside airframe is normal circulate, be worth in order to achieve the humidity inside the dynamo normally.

该缩小机可与躁热装置（附着式、冷藏式或者吸取式）匹配，使发电机内氢气完成体机外循环，保证附着式躁热装置的复生躁热，既便在发电机停机或者盘车态势下氢气仍可以在体机外正常循环，以达到和实现发电机内湿润程度正常值。

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。