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The female prosopon body oval,body long 2.3-3.5mm,antenna 7,the body by the white cotton and kapok shape wax silk,many insect\'s wax silk often is fused densely in together,forms the cotton and kapok to be spherical,after the dewaxing the insect body becomes the purple red.

雌成虫体卵形，体长2.3—3.5mm，触角7节，体密被白色棉状蜡丝，多个虫的蜡丝常融合在一起，形成棉球状，去蜡后虫体成紫红色。

In order to investigate antenna with complex structure efficiently, the combination of alternating-direction-implicit and pseudospectral time-domain method is used.

为了对复杂结构的天线进行有效分析，采用了变换方向隐式的伪谱时域方法，通过分析时间分裂步原理，将三维麦克斯韦方程组降阶为三组一维表达式，用于ADI-PSTD的计算。

In order to investigate antenna with complex structure efficiently, the combination of alternating-direction-implicit and pseudospectral time-domain method is used. By analyzing the time-step splitting principle, the ADI-PSTD method is therefore simplified.

摘 要：为了对复杂结构的天线进行有效分析，采用了变换方向隐式的伪谱时域方法，通过分析时间分裂步原理，将三维麦克斯韦方程组降阶为三组一维表达式，用于ADI-PSTD的计算。

Composed of puddled iron, the Eiffel Tower is 1,063 feet (325 m) tall, including a 79-foot antenna, the height of an 81-story building.

由钢铁构成，艾菲尔铁塔是一千○六十三英尺（ 325米）高，其中包括79英尺的天线，有81层大楼那么高。

Composed of puddled iron, the Eiffel Tower is 1,063 feet (325 m) tall, including a 79-foot antenna, the height of an 81-story building.

埃菲尔塔是由搅炼熟铁制成的，总高达1063英尺（325m ），相当于一座81层建筑的高度，其中还有一个79英尺的天线。

Composed of puddled iron, the Eiffel Tower is 1,063 feet (325 m) tall, including a 79-foot antenna, the height of an 81-story building.

因此它有其特有的意义。

For the demand of low orbit satellite communication system requiring, designs the quadrifilar helix antenna was designed.

根据低轨道小卫星通信系统对天线的要求，文章对四臂螺旋天线进行研究。

The theory of the quadrifilar helix antenna is analyzed in the aspect of application, thus the design work is done under the theoretical guidance.

2从工程应用出发对四臂螺旋天线进行详细的理论分析，为设计工作提供理论指导。

The quadrifilar helix antenna is widely used in the space communication, as it has globe symmetry band and good circular polarization.

四臂螺旋天线由于其优良的圆对称半球波束特性，良好的广角极化特性，在空间通信中得到广泛的应用。

A novel conical printed quadrifilar helical antenna for GPS application is presented.

提出了一种应用于全球定位系统的宽波束圆极化圆锥印刷四臂螺旋天线。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。