two-chamber filter

Three methods for design of SAW filter with two pass bands and a trap are presented.

研究比较了几种陷阱型双通带声表面波滤波器的设计方法。

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Two methods ( the contact filter paper method and natural soil method) were used to study the acute toxicity of chlorpyrifos to earthworms.

采用滤纸接触法和自然土壤法研究了毒斯乐对自然蚯蚓的急性毒性。

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The proposed algorithm models each module, such as the primary path, the secondary path, the FSF and the control filter, with a simplified Finite Impulse Response ( FIR) structure that includes only two coefficients.

本算法采用只含两个系数的有限冲击响应（FIR）结构对次级通道、初级通道、选频滤波器、控制滤波器等有关模块进行建模。

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An orbit prediction program based on epoch state filter is designed. Then sun-synchronous orbit is taken as an example to generate the base track, amend two-line elements and predict medium and long term orbit.

设计了基于历元状态滤波的轨道预报方案，以太阳同步轨道为例生成基准轨道，并进行了双行元修正和中长期轨道预报仿真。

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The thirty-two order filter is worked out using distributed arithmetic algorithm which is simplified by symmetry.

在算法上采用了分布式算法，并利用对称性简化设计，用16阶的设计完成了32阶的滤波器。

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