The combination of low pressure on one side and high pressure on the other creates a drag force that must be overcome — a significant waste of energy.
为此，必须浪费大量能源以克服压力差产生的拉力。
2
The high resolution Marine seismic survey is seriously affected by the energy source, receiver system, the combination of streamer and sources, the recording system and the field conditions.
Improving the traditional tracking control circuit and power combination to improve the system's energy conversion efficiency about 7 to 10 percentage points, with high stability.