dwarf signal造句

例句与造句

1. A dwarf signal may also be placed in conjunction with a main signal.
2. In Switzerland, shunting manoeuvres can be controlled either by shunting signals or dwarf signals.
3. Dwarf signals are typically mounted on the ground in areas of low speed movements or restricted clearances.
4. Dwarf signals are usually positioned on the left of the tracks and only apply to that track.
5. Dwarf signals may be sometimes mounted higher up on a small mast or other structure for improved visibility.
6. It's difficult to find dwarf signal in a sentence. 用dwarf signal造句挺难的
7. "' Dwarf signals "'are smaller signals used in low speed or restricted clearance areas.
8. As dwarf signals are not designed to be seen from long distances, they are not generally equipped with targets.
9. Most signaling aspect systems have a parallel set of aspects for use with dwarf signals that differ from aspects used in high signals.
10. Signals like the model N / N-2 could also be mounted directly on the ground as a dwarf signal without a backing.
11. This is where a dwarf signal displays multiple lamps on what would ordinarily be a single signal head creating the effect of multiple signal heads.
12. If the main signal shows any other aspect than " Stop ", the dwarf signal shows the " Proceed with caution " aspect.
13. Dwarf signals may have multiple heads just like a high signal, but sometimes dwarf signals use so-called " virtual heads " to save on space and cost.
14. Dwarf signals may have multiple heads just like a high signal, but sometimes dwarf signals use so-called " virtual heads " to save on space and cost.
15. These can be known as " high dwarfs " or " stick signals, " but a tall mounting does not change the lower speed applications of the dwarf signal.
16. In 1930, close clearances of the Philadelphia Suburban Station complex spurred development of the pedestal-type position, which consisted of two position dwarf signals in a common cast backing.
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