refer to不是系动词。
The speaker often referred to his notes .那个讲演的人不时地看发言稿。
It can also refer to a long-term occupation .它还可指长期的职业。
Invariance refers to areas of agreement .不变性指的是一致的部分。
The dispute was referred to the united nations .这项争论已提交联合国。
The rod is sometimes referred to as a light pipe .这种杆有时称为光管。
Readers are referred to refs. 6 through 9 .读者可参阅文献6至9。
The subscript i refers to instantaneous values .脚注i指瞬时值。
Product properties refer to an entity .产品性质则是物体的属性。
It can also refer to long-term objectives .它还可指长期的目标。
They are now referred to by letters .它们现在就用字母来表示。