ballast; railway ballast
Tone colorsmāmámǎmàma
Meanings
1 sense · 3 examplesnoun
ballast; railway ballast; crushed stone
technicalA layer of crushed stone or gravel laid on railway roadbeds. Its primary functions are to distribute the load, facilitate drainage, and prevent track deformation.
Tiě铁
guǐ轨
xià下
miàn面
de的
dào道
zhǎ碴
xū需
yào要
dìng定
qī期
wéi维
hù护
。
The ballast beneath the rails needs regular maintenance.
Gōng工
rén人
zhèng正
zài在
xiàng向
lù路
jī基
shàng上
pū铺
shè设
xīn新
de的
dào道
zhǎ碴
。
Workers are laying new ballast onto the roadbed.
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Dào道
zhǎ碴
de的
pái排
shuǐ水
xìng性
néng能
duì对
tiě铁
lù路
ān安
quán全
zhì至
guān关
zhòng重
yào要
。
The drainage capability of the ballast is crucial for railway safety.