英语语法分析

Each compound eye was composed of approximately 630 ommatidia.

每个复眼约包括630个小眼。

Under the scanning EM, there was a thumb-shaped area with no ommatidia on the back of the compound eye.

扫描电镜下，半球形复眼的背面有一拇指状的无小眼区。

The results show that a compound eye is composed of some thousands of ommatidia which present square in shape on the surface and seem grid and very clean and full without any gaily.

结果表明正常复眼由数千小眼集合而成，小眼面为正方形，呈网格状整齐排列，表面清洁饱满，没有任何毛状突起。