该系统选用西门子新一代的6RA70系列直流调速装置作为核心控制器，较好地实现了船模拖车速度的控制要求。
The new generation of Siemens 6RA70 series d. c. speed adjustment device is selected as the key controller of the system, which satisfies the requirements of controlling carriage speed well.
计算中采用的流体水动力系数，取自系列船模试验的资料。
The hydrodynamic forces coefficients adopted in calculation are taken from the information of the systematic test of ship models.
近几年来，上海交通大学船模试验池对简易导管螺旋桨进行了多种方案的系列试验研究。
In recent years, several types of the ducted propellers with simplified duct profile have been systematically tested by the Shanghai Jiao Tong University ship model basin.
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