2) downtake
下气道，下通道
3) down-flow,downstream
下流，下道，下步
4) Underground Tunnel
地下坑道
1.
In order to ensure the location of the survival rapidly, the wireless sensor network is applied to localization in underground tunnel environment, when the accidents happened to cause the workers stranded underground.
各种地下作业都要求工人在地下坑道内进行施工,其工作环境比较恶劣。
2.
In order to improve the anti-explosion capability of underground tunnel,using ANSYS/LS-DYN dynamic analysis software,we calculated the tunnel damage caused by the explosion.
为提高地下坑道抗内爆载荷的效能,利用ANSYS/LS-DYNA动力学分析软件,计算分析了内爆TNT对衬钢坑道的毁伤效果,同时对比分析了不同厚度的衬钢对坑道防护效能的影响,所得结果对衬钢的选择、措施的改进及工程设计均提供了有利依据。
5) sewer
[英]['su:ə(r)] [美]['suɚ]
下水道
1.
Previous studies showed that the municipal sewage with low salinity could achieve self-purification by microbial reactions in sewer.
通过72 h的连续批量实验,分析高盐度生活污水在下水道环境中的主要微生物反应以及这些微生物反应对水质的影响。
2.
An experimental research was carried out to simulate the operating condition of low,middle and high concentration town sewage treatment by activated sludge system in sewer lines and ditches.
采用下水道活性污泥模拟系统处理低、中、高浓度的城镇污水,结果表明:当进水COD分别为200、400及600 mg/L左右,MLSS为3。
3.
City sewers are responsible for water circulation and recovery in a city.
21世纪的城市下水道担负着水健康循环和水环境恢复的重任,应该成为水资源与营养物质循环的纽带,成为绿色肥料与自然能源的基地。
6) beneath driveway
车道下
1.
Besides the internal pressure and the gravity of the content,the gravity of the ground,including the earth and the concrete,and the pressure created from driving cars act together on the buried horizontal vessel beneath driveway.
本文对车道下埋地卧式容器的计算方法提出了自己的看法。
补充资料：下道
1.间道，小路。 2.犹下策。 3.下流，不正经。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条