Figure 8 shows the upgraded GraphicsEnvironment class with member variables that store the starting and ending coordinates of the viewport as VSX, vsy and vex, vey.

图8显示了更新后的graphicsenvironment类，它具有几个成员变量，用来存储viewport的起点和终点坐标：vsx, vsy和vex, vey。

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Then it expands the B-vex functions by defining connected pseudo B-vex and connected quasi B-vex functions in terms of right upper derivative with respect to an arc.

在局部连通集上定义了连通b -凸函数；在关于弧的右上导数的基础上，定义了连通- B伪凸，连通b -拟凸函数，推广了B -凸函数。

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Then it expands the B-vex functions by defining connected pseudo B-vex and connected quasi B-vex functions in terms of right upper derivative with respect to an arc.

研究了函数的一阶及二阶右导数与函数凸性的关系，推广了数学分析中的有关结果。

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They can entertain with eccentricity or anecdotes, vex with their stubbornness, seduce with hospitality and amaze with feats of strength.

BBC: Seductive southern Crete