His painting became less illustrational and more fluid.
他的画变得更为流畅，没那么生硬了。
《柯林斯英汉双解大词典》
2
The illustrational results show that we can realize a fast and accurate evaluation for college library service quality by this method.
实例表明，该方法能够实现对高校图书馆服务质量的快速、准确的评价。
3
This paper gives an an illustrational proof to beam intensity distribution for narrow beam of rectangular cross section, and presents an accurate expression to calculating beam intensity.