Heterotrichida什么意思解释？

The actue toxic effect of heavy metal Cu ~ ( 2 + ) to Stentor Polymorphrus ( Ciliophora, Heterotrichida ) was studied.研究了重金属铜对异毛目纤毛虫多态喇叭虫 ( Stentor polymorphrus ) 的急性毒性影响....

Heterotrichida的音标：...