Block copolymers have rich phase behavior,and in the bulk they can microphase-separate to form spheral,cylindrical,bi-continuous or layered structure.

嵌段共聚物有着丰富的相行为,中会发生微相分离形成形、柱形、双连续形和层状。

The acrosome in the head was spheral in shape, and there was only one mitochondria in the mature sperm.

染色质凝集成团块状，中部不发达，线粒融合成1个环绕中部。