Based on the water quality and fish food foundation, the proposal of immigrating some fish species, which eat the rotten organic fragment as primary feed, is put forward.
根据河道水质情况及渔业饵料基础，提出引进以摄食腐碎为主的鱼类等措施。
Foundation treatment, water proof measures, design principle and characteristic of feed water and drainage pipeline in collapsible loess area were introduced.
由于湿陷性黄土的特性，湿陷性黄土地区给水排水管道设计越来越引起人们的关注。
In foundation of the dual-layer structure, combining with capacitive coupled feed technology, the impedance bandwidth of the microstrip antenna has been further expanded;
在双层结构的基础上，结合电容耦合馈电技术，进一步扩展了微带天线的阻抗带宽；
On this foundation, in view of features that the elevator starts and stops frequently, the ideal starting time parameter and the value of feed forward adjustment when input power .
在此基础上，根据电梯起停频繁的特点，利用直流母线电压变化率推导出起动时刻理想初始参数和在输入功率变化时的前馈调节量，提高了系统的快速性。
On this foundation, in view of features that the elevator starts and stops frequently, the ideal starting time parameter and the value of feed forward adjustment when input power .
在此基础上，根据电梯起停频繁的特点，利用直流母线电压变化率推导出起动时刻理想初始参数和在输入功率变化时的前馈调节量，提高了系统的快速性。
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