该装置设计精巧、费用低、可靠实用，具有一定的推广应用价值。

The device is exquisite in design and low in cost. With its reliability and practicability, it is of spreading value.

youdao

该装置设计精巧、费用低、可靠实用，具有一定的推广应用价值。

The device is exquisite in design and low in cost. With its reliability and practicability, it is of spreading value.

youdao