pneumatic holder-on

例句：

1. 1. The pneumaticholder-on is a crucial component inthe assembly process.
   气动夹持器是组装过程中的关键部件。
2. 2. The engineer used a pneumatic holder-on to holdthe bolt in place.
   工程师使用气动夹持器来固定螺栓。
3. 3. The pneumatic holder-on was designed to improve accuracyand efficiency in the assembly line.
   气动夹持器被设计用来提高生产线上的准确性和效率。