据他和其他研究人员估计在第三代拉美裔和亚裔美国人中至少有50 %与异族通婚。
Among third - generation Hispanic and Asian americans, exogamy - - marriage outside one 's ethnic group or tribe - - is at least 50 percent, he and others estimate.
本文基于TD - SCDMA系统，对智能天线技术在第三代移动系统中的应用进行了研究。
It examines the application of smart antennas technology in the 3rd mobile communication based on TD-SCDMA system in this thesis.
微通道板离子阻挡膜在第三代微光像增强器中起着重要作用，本文在分析离子阻挡膜形成原理的基础上，给出了实验方案。
The ion barrier film at the input of the microchannel plate (MCP) plays an important role in improving the lifetime of the third generation image tube.
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