However, there are generally shortcomings such as long operation cycle, low work efficiency, and high cost, which are particularly prominent for the difficulty of obtaining data in dangerous areas. (
However, the widespread shortcomings such as long working cycle, low efficiency and high cost, especially the problem of difficult yin to obtain data in dangerous areas. (
However, there are many disadvantages, such as long work cycle, low efficiency, high cost and so on, especially for data acquisition in dangerous areas. (<br>