The no staff and self-reducing tacheometer is a new type of surveying instrument designed and constructed by a group of teachers and students of our department.

无须跑尺自计视距仪是一种新式的测量仪器，经过研究，我们已初步试制成功。

youdao

The no staff and self-reducing tacheometer is a new type of surveying instrument designed and constructed by a group of teachers and students of our department.

无须跑尺自计视距仪是一种新式的测量仪器，经过研究，我们已初步试制成功。

youdao