这些小管围以电子致密的膜，中央是半透明的轴心。

These tubules were surrounded with an electron dense membranous sheath leaving the core semi translucent.

youdao

结果用正常鼠血清处理虫体切片，从皮层、肌层到皮层细胞体，未见有明显的电子致密的胶体金颗粒分布。

Results the distribution of the gold particles had less tissue and organelle specificity, which could be found in tegument, muscle, plasma, nucleus and on the nucleus membrane.

youdao

在一例典型毛细胞白血病细胞胞浆中见有少数小的电子致密颗粒，其性质和意义尚不清楚。

In one of the cases, some small electron dense granules were found in the cytoplasm, their nature and significance are still unknown.

youdao