1) cross of open ditch
明沟暗过
2) underdrain of filter
过滤池暗沟
3) blind ditch
暗沟
1.
Treatment methods of blind ditch and underground river in project of soft soil foundation;
浅谈软弱地基中暗沟和暗河等的处理方法
4) light and shade
明暗
1.
Hue which is a kind of subtle visual effect, is generally born of the factors, such as the relationship between cold and warm colors, the contrast between light and shade as well as the impression of space.
色调是一种微妙的视觉效果,一般产生于冷暖色之间的关系,明暗对比中层次变化与空间氛围等因素。
2.
Five corresponding points of teaching of charcoal drawing were found through analysis of the uniqueness,which were the training of details,the training of abstract composition,the training of light and shade,the training of materials,and the training of view point and view angle.
系统地阐述了空间设计艺术中素描教学的独特性,并通过分析这些特点以找出素描教学中必要的5个对应点:细节训练、抽象化构成训练、明暗关系训练、材质训练、视点与角度训练,从现有的僵化素描教学体系中突围出来,搭建空间设计与素描教学的桥梁。
5) covered conduit
暗管道;暗沟
6) secret gutter
暗天沟
补充资料：过滤池
过滤池
filter
出。垫料常用粒径为2~32mm的天然卵石或碎石，下大上小，分层敷设。滤料采用石英砂、无烟煤、陶粒、塑料球等，粒径为0.5~2.omm。滤料表面的接触、凝聚及沉降作用是去除污染物微粒的基本原因。滤料被污染物附聚到一定程度后，就需反冲洗，冲走污物后继续过滤。过滤池要求较低的进水浊度(2 omg/L以下)。出水浊度可达到3一5度，水质较优，可回用于对水质要求较高的生产工艺，或作公共卫生用水使用。 (张希衡)guo}口ehi过滤池(fi her)借助滤料截留细小惫浮物和胶体物质的废水处理构筑物。废水从池底均匀配人池内，向上依次通过垫料层和过滤层，从池顶集水设备排
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