Assuming tags in the interrogator access range are uniformly distributed, a multi-stage interrogation scheme is utilized to further avoid tag collisions and minimize the system power consumption.
假设标签在读取的范围内均匀分布，利用分阶读取的技术将更进一步避免标签冲突并且使系统能量消耗减到最小。
Precision multi-stage filtration system can remove mechanical impurities in oil effectively.
精密的多级过滤系统，能有效除去油中的机械杂质。
The multi-stage vacuum system and gaseous secondary electron detector(GSED) for environmental scanning electron microscope(ESEM) were simply introduced and the basic principle of ESEM was discussed.
本文简单介绍了构成环境扫描电镜（ESEM）的多级真空系统和气体二次电子探测器，描述了ESEM的基本工作原理。
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