Internal composition of protons and neutrons is not examined completely.
科学家尚未对质子和中子的内部构成形成完整的认识。
The analysis and research on the internal composition of the system and its signal processing are made.
对系统内部结构与信号处理进行了分析研究。
Primary industry is the fundamental industry, and has economic competitions in its internal composition.
第一产业是基础产业,其内部也存在各行业的经济竞争。
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