track change control
英 [træk tʃeɪndʒ kənˈtrəʊl]
美 [træk tʃeɪndʒ kənˈtroʊl]
磁道变化控制
双语例句
- But in fact, due to the great variation of ballast resistance during track work and change of "stress free temperature" of the rail, they are hard to measure then hard to control.
但道床阻力在作业时变化很大，钢轨在线路上长期使用，锁定轨温可能发生变化，温度力亦不易控制。