1. This is the stop condition for the recursion.

2. and there is no stop condition.

3. In this paper, the stop condition for recursion orthogonal least square (ROLS) algorithm is improved, and the optimal number of hidden neurons in RBFNN is chosen using this improved ROLS algorithm.

4. Additionally, the stop condition of the minimum traveltime tree algorithm is modified to reduce computational time.

5. Testing : press stop for slow sending under stop condition, checking its cutting action and result.

6. The author introduces its working principle and process, expounds its system frame, operating condition, stop condition and matching parts.