1、

the electromechanical coupling coefficient is usually determined from the relative frequency spacing of the resonance and anti resonance.

压电材料的机电耦合系数通常由谐振及反谐振频率之间的相对间隔确定。

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2、

when local carrier absolute frequency offset equals half of consecutive subcarrier frequency spacing at the transmitter, that is to say, when relative frequency offset reaches 50%, the probability of symbol error deteriorates to fifty percent.

当本地载波的绝对频偏达到发送相邻子载波频率间隔的一半,即相对频偏达到50%时,系统的误符号率恶化为50%。

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3、

Especially, the influences of the several factors on both the electric field distribution and the radio interference characteristics have been systematically analyzed. These factors include the center spacing, the line height relative to ground, the bundle spacing, and sub-conductor radius.

此外,对交直流线路中心间距、对地高度、导线分裂间距以及子导线半径等因素对混合电场和混合无线电干扰的影响作了系统的计算分析。

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4、

The atoms are large, relative to their spacing.

原子和它们的间隔相对而言是大的.

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