高手：another difficult sentence！！

xionghuixh

...........because they are unwilling to have their names entered as having taken out such and such a book for fear the agents of other firms should be able to trace the kind of research they are  likely to be undertaking.

中文意思如下：因为它们不愿让人家记下它们公司的名字和借阅的某一本书。他们生怕别的公司的情报人员据此摸到他们可能要从事的某项科研项目。

其中 have their names entered as having taken out 中的as是adv ,or conj?是什么意思？

这种用法好像很奇怪？？