The pulser sends out the sequences regularly, enabling the surface system to tune the adaptive flters for changing channel con- ditions.
脉冲发生器定期向外发送序列，使地面系统做出调整以适应过滤器来改变信道状况。
2
It was found that the florescence and time of flowering, pollen production appeared not only in close correlation with the weather cond-ditions and the air temperature, but also with the air humidity.