It is a broad based stock index, comprised of 30 companies and it is price weighted.
这是一个基础广泛的股票指数，组成30家公司和它的价格的加权。
To improve the identification efficiency, the auto index system of the main broad-leaved trees in Guizhou province was established, which based on the data of the trees.
为提高树种的鉴定效率，本研究基于贵州省主要阔叶树种资料建立了贵州主要阔叶树种自动检索系统。
To improve the identification efficiency, the auto index system of the main broad-leaved trees in Guizhou province was established, which based on the data of the trees.
为提高树种的鉴定效率，本研究基于贵州省主要阔叶树种资料建立了贵州主要阔叶树种自动检索系统。
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