telephone set造句

1、an additional telephone set that is connected to the same telephone line.
连在同一电话线上的额外的电话机。

2、Please clean the telephone set including the dial.
请将电话机清理一下，包括拨号盘。

3、This product is of secure type consisting of telephone set and coupler,.
本产品为本质安全型，由电话机和耦合器两部分组成。