By tracking this ratio over time, he can determine how long gas has taken to reach the surface and gain clues to the chemical, thermal, and mechanical state of the rocks the gas is passing through.
The results also show that the performance of this communication system can be affected by background optical, APD gain and modulation extinction ratio.
该通信系统还受背景光、雪崩光电二极管（APD）增益和调制消光比等因素的影响。
3
Higher payout ratio and more bonus stocks will make the price of the shares higher and will bring considerable capital gain.