gradient post造句

例句与造句

1. A gradient post showing 1 in 80 / 1 in 34 was installed on one of the station platforms.
2. The manager of the railway also reported that crowds of visitors were breaking down fences, pulling up gradient posts, throwing down wires and interfering with the railway bed.
3. Ilfracombe Museum contains many photographs and relics from the line, including a gradient post and one of the concrete station name boards from Ilfracombe Station ( both visible outside the building ).
4. It's difficult to find gradient post in a sentence. 用gradient post造句挺难的