This was before the steam locomotive, and canal building was at its height.
这些事情都发生在蒸汽火车出现之前,而且,运河修建在那时正处于繁荣时期。
2
The load transfer of B0+B0-B0+B0 locomotive with different traction schemes was calculated, basing on the definition of nominal and transitional and equivalent traction height.