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Models for the electromagnetic interaction between the target and trunks or between the trunks and trunks are developed, and these models are used to derive the coherent fields scattered by the target and fractal forest. Then, the polarization angular correlation function is calculated by using azimuthal angular averaging, and used to detection target buried in forest.

本文用L系统对森林环境进行了理论建模；研究了有限长分层介质圆柱的树干散射模型；分析了倾斜粗糙地面上树干及分形树的电磁散射特性；讨论了环境对确定目标电磁散射特性的影响；研究了环境与隐蔽目标复合电磁散射，用角相关函数、极化角相关函数对隐蔽目标进行了检测。

The measurement of roughness parameters of workpiece surface using the technique of light angular scattering distribution has been developed recently.

一、引言在工件表面粗糙度参数的测量中，光的角散射分布方法是一种有发展前途的测量技术。

At present, the ring lasers have been developed as the angular velocity and angle sensors.

目前环形激光器已发展成为角度和角速度传感器。

We have already developed the technologies of our own new feature as following:(1) Surface modification of Ultra-fine anhydrite powder.

我们选择这一项目进行攻关既具有坚实的理论和试验依据，也具有原创性，将对硬石膏矿产业和塑料产业的发展产生极其深远的意义。

A new type of car is now being developed powered by anhydrous ammonia.

日前正在研制一种新型的以无水氨作动力的汽车。

Marx thought that the freedom of human,established in labor practice and developed with the human development and perfection,was formed during the process of animadversion on reality.

而马克思认为，人的自由立足于人类的劳动实践，它是随着人的发展完善而不断展开的过程，并在批判现实的过程中形成的。

The incompulsory administration as an administrative action also came into being and developed and improved in an animadvert on compulsory administration.

而非强制行政作为一个行政行为的范畴，其产生、发展和完善则始终渗透着对强制行政的批判性反思。

Developed, including a Korean pine park, a botanical garden, a wild animal park and a flower corridor.

无独有偶，对面山坡上散落近百座石丛，千姿百态，形态各异。

Been developed, including a Korean pine park, a botanical garden, a wild animal park and a flower corridor.

无独有偶，对面山坡上散落近百座石丛，千姿百态，形态各异。

The animal husbandry in this area has developed greatly after liberation.

解放后这个地区的畜牧业得到了巨大的发展。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。