USL：

abbr.

吊挂货物(Under-Slung Loads);水下音响实验室(Underwater Sound Laboratory);超编待用人员名册(Unemployed Supernumerary List)

双语例句：

1.USL can provide systems for both simple and complex applications.

USL提供的设备系统都可用于简单和复杂的物质检测。

2.USL is the appearance layer of the model.

用户服务层是模型的表现层。

3. USL's range of PC-based ultrasonic equipment is specifically designed to meet these needs.