心肌细胞横切面积的长轴，随心肌细胞体积的增加而逐渐增大；
The major axis of cross-section area of myocytes was enlarged but the minor cross-section diameter did not show any more changes.
结论：血管横切面积缩小及血流量降低在老年ed流行病学中起重要作用。
Conclusions: The narrowed vessel section area and lowered blood flow volume play important roles on Ed epidemiology of elderly patients.
正常心肌细胞的生长，是由于细胞的长度和横切面积的增加，从而使心肌细胞体积增大。
Physiological growth of normal cardiac myocytes was due to increase in cell volume, i. e. the cell length and cross-section area were enlarged.
结论根据血流动力学原理提示血管横切面积轻微缩小足以使血流量明显降低，这在老年ed的流行病学中起着重要作用。
Conclusions The slightly narrowed vessel section area can cause notable lowered blood flow volume and act an important role on Ed epidemiology of elderly patients.
在横切面上，次生韧皮部的面积比次生木质部大得多。
In the transection section, the area of secondary phloem is much larger than secondary xylem.
髓和茎横切面的面积比值大小是影响倒伏的重要因素。
The area ratio between the transection of pith and whole stern is an important factor on lodging-resistant.
髓和茎横切面的面积比值大小是影响倒伏的重要因素。
The area ratio between the transection of pith and whole stern is an important factor on lodging-resistant.
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