英语语法分析

The gill tectology and ultrastructure of Perna viridis were observed using light and electron microscopes.

应用光镜和透射电镜观察翡翠贻贝鳃的组织形态学和超微结构。

Shell length, shell width, shell height, ligament length, and edible part weight of each of 200 Perna viridis individuals were measured.

结果表明：壳长、壳宽、壳高、韧带长与软体部质量相关极显著P。

After exposed to P. lima, the level of DSP toxins in the gill of Perna viridis increased significantly in a dose-dependent relationship with time, and achieved the highest at the 3rd day.

毒素积累阶段，翡翠贻贝鳃组织中DSP毒素显著增加，于第3 d时达到最高，呈明显的剂量和时间依赖关系。