木材分开后，分级工再次标记等级。

Again, after the lumber has been separated, the grader assigns a grade.

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目的探讨星形细胞瘤的增殖活性，及星形细胞瘤的DNA倍体特性、细胞周期分布和增殖细胞核抗原标记指数(PCNA - LI)与病理分级的关系。

Objective the proliferative activities of astrocytomas and the relationship among DNA ploidy character, cell cycle distribution, PCNA-LI and pathological grades were investigated.

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一个比特标记加入到宽带传输的某一描述符中以指示传输流的分级，所述描述符提供关于传输流的信息。

One bit flag is added into a certain descriptor of the broadband transmission to indicate the hierarchy of the transport stream on which said descriptor is providing information.

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