1. Trent wiped the rain from his eyes as he tried to calculate speed and distance against the drift of the Zodiac.

2. It does not only rai se the calculating speed but also improves the simulation precision.

3. The formulas have the advantages of fast calculating speed, high accuracy and so on.

4. In comparison with the conventional algorithm, the calculating speed of our algorithm can be doubled.

5. The algorithm gives an effective solution for the question about redundant operations and low calculating speed.

6. Simulation results show that the sound ray solving method has good calculating speed and precision.

7. With the application of the abacus, people summarized many abacus rhymes, increasing the calculating speed.