1·In electric railway track circuit, the two steel tracks are both transmission line of the track signal and return line for electric locomotive tractive current back to electric substation.
在电气化铁路轨道电路中，两条钢轨即是轨道信号的传输线，又是电力机车牵引电流返回变电所的回流线。
2·The test result of the said chassis tried in the paddy field is shown on data sheet, and some tractive characteristic curves of tested track are given.
示出用该底盘在水田中试验结果的一组数据，画出被试履带行走装置在试验地中的牵引特性曲线。
3·So small tractors fitted with iron wheel with lugs can improve tractive and appendiculate performance of tractor in dry land.
表明小型轮式拖拉机叶轮与胶轮并装可提高旱地作业，特别是重负荷作业时的牵引附着性能。
4·The power factor for the railway substation of the electrified railway is low and can not meet the conditions of severe tractive load to reactive compensation requirements.
针对电气化铁路变电所功率因数低，不能满足剧烈变化的牵引负荷对无功补偿要求的现状。
5·By means of the bin, a comparative test of tractive performance between the wedged paddle wheels and nonrim ones ofpaddy-field tractor(P. F. T. ) is analysed.
此外，还分析了在该土槽上所进行的机耕船用楔形轮与无轮缘叶片轮的牵引特性的对比试验。