paving and tiling
铺路和敷设排水瓦管
A layer of coarse gravel is often placed around the drain tile.
常常在排水瓦管周围铺一层粗石砾。
Centre ivoirien pour la gastin des entreprises
科特迪瓦企业管理中心
lead seal single slip liner hanger
铅封单卡瓦衬管悬挂器
Archdiocese of San Salvador
圣萨尔瓦多大主教管区
Shock Absorbers: Twin tube gas-pressurized
双管式瓦斯气压避震器
QING: director of brick and tile making for the imperial mausoleum
陵寝管理烧造砖瓦官
Let each one sweep the snow from his own doorstep and heed not the frost on his neighbour's roof.
各人自扫门前雪，莫管他人瓦上霜。
A still tongue keeps a wise head
各人自扫门前雪莫管他人瓦上霜
United Nations Postal Administration (Geneva Section)
联合国邮政管理处（日内瓦分处）
tubing ring with wedges
带卡瓦的起下油管用工具
double-grip large bore single string packer
双卡瓦大内孔单管封隔器
double grip retrievable casing packer
双卡瓦可回收式套管封隔器
single grip retrievable casing packer
单卡瓦可收回式套管封隔器
Gas is piped into all the houses.
瓦斯由管道输送到各家各户。
This piece of orchestral music was written by Wagner.
这支管弦乐曲是由瓦格纳写成的。
This piece of orchestral music is write by Wagner .
这支管弦乐曲是瓦格纳写成的。
Each one sweeps the snow from his own doorstep and doesn't bother about the frost on his neighbor's roof.
各人自扫门前雪，不管他人瓦上霜。