Open Access

表1

公式Ⅰ~Ⅳ的积分点个数[18]

方法 积分点的个数
公式Ⅰ dΘ2+dΘ+2, 2≤dΘ≤7
公式Ⅱ dΘ2+3dΘ+3, dΘ>3
公式Ⅲ 2dΘ2+1
公式Ⅳ 2dΘ2+1

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.