例句與造句

1. Train speed optimization may also be implemented using conventional signalling.
2. While train speed optimization needs some technical infrastructure, it is more of an operational concept than a technical installation.
3. One can relatively easily implement train speed optimization using for instance cab signalling ( e . g . using ETCS ), but the presence of a cab signalling system does not necessarily mean that it uses train speed optimization.
4. One can relatively easily implement train speed optimization using for instance cab signalling ( e . g . using ETCS ), but the presence of a cab signalling system does not necessarily mean that it uses train speed optimization.
5. It's difficult to find train speed optimization in a sentence. 用train speed optimization造句挺難的