in use什么词性

词性是介词短语，例如：

1、The chapel was built in the 12th century and is still in use today.这座小教堂建于12世纪，今天仍在使用。

2、Analysis of Limitations of Domestic Gas Drainage Monitoring System in Use.国内瓦斯抽放监控系统在使用中的局限性分析

3、This effect cannot be applied because it is already in use.不能再应用此效果，它已在使用中。