At that time, not only the boundary of then music origin was fixed but also the three concepts "voice, sound and music" were distinguished, via the analysis of music essence.

彼时不仅对音乐的起源作出了多种界说，还在对音乐本质的分析中，将“声”、“音”、“乐”这三个概念加以区分。

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Eventostratigraphic boundary and biostratigraphic boundary have to be clearly distinguished in the study of the Permian-Triassic boundary in South China.

华南二叠-三叠系界线研究应严格区分事件地层界线与生物地层界线。

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Abstract:Basedon the criterion of boundary between Shang and Western Zhou dynasty in Anyang region, a pile of Western Zhou remains are distinguished.

摘要：本文在提出安阳地区商周分界判断标准的基础上，新辨识出一批重要的西周遗存。

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