main features and technical target 主要特点和技术指标
The working principle, basic structure and main technical target of the instrument is introduced.
介绍了该仪器的工作原理，基本结构，主要技术指标。
The main technical target of spectrometer was introduced, and the key parts influencing spectrometer performance were analyzed.
介绍了仪器的主要技术指标，对影响仪器性能的关键单元进行了分析。
Described are the development target, main technical features and parameters, main structure, finite element calculation results and testing of the 4d-axle welding frame type bogies.
介绍了4d轴焊接构架式转向架的研制目标、主要技术特点和参数、主要结构、有限元计算结果及试验情况。
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