1) segregation cycle
分凝循环
2) recycled coagulant
循环凝结剂
3) water cycle
水分循环
1.
The water cycle processes in large scale were studied by many scientists.
利用GAME -Tibet期间所取得的高分辨率土壤温度、含水量以及降水量资料 ,对藏北高原地气之间的水分循环过程进行了分析。
2.
Forest fire effects on hydrology through indirect ways, which mainly represented through vegetation, letter, soil and ecological environment changes after fire and their effects on water cycle ,water quality and aquatic organism.
森林火灾对水的影响是间接的 ,主要表现为火烧后植被、地被物、土壤以及生态环境的改变影响水分循环过程、水质、水生生物等方面。
3.
Based on the observational data from the positioning experimental plots,this paper sets forth the dynamic characteristics of water cycle of latored soils in the south subtropics.
根据定位观测资料,阐述了南亚热带丘陵赤红壤水分循环的动态特征。
4) Nutrient cycling
养分循环
1.
Roles of plant in nutrient cycling in wetland;
植物在湿地养分循环中的作用
2.
Comparison on nutrient cycling in different generation plantations of Chinese fir;
不同栽植代数杉木林养分循环的比较研究
3.
Comparison of biomass dynamic and nutrient cycling between Pinus massomiana plantation and Pinus elliottii plantation;
马尾松与湿地松人工林生物量动态及养分循环特征
5) Nutrient cycle
养分循环
1.
The nutrient cycle in three types of standing density of planeseeding Pinus massoniana of Hunan Province was studied in this paper.
对湖南省3种不同密度类型的马尾松飞播林分的养分循环进行了研究。
2.
A comparative study on effects of various cultivation system on nutrient cycle of purple soil was conducted according to long term experiments.
用定位试验结果,比较聚土免耕、早三熟、平作等耕作制对紫色土氮磷钾养分循环结构和强度的影响。
6) Cycling separation
循环分离
补充资料:钢筋混凝土循环水管施工
钢筋混凝土循环水管施工
reinforced concrete circulating water pipe construction
gongjln hunn一ngtu xunhuanshu一guan sh一gong钢筋混凝i循环水管施工(reinforced con-erete eireulating water pipe eonstruetion)有现浇和预制两种施工方法。现浇管在挖沟完后,在沟内分段浇筑。预制预应力管在工厂制作,再运到现场敷设。预制管工厂的设备比较简单,如工程地点离工厂较远而该种管子数t多时可将设备搬到现场制造。管子的直径可达3m甚至更大,长度一般为4m。 预制预应力钢筋棍凝土管预制,可用一阶段(展动挤压)工艺或三阶段(管芯绕丝)工艺施工。一阶段工艺系用申立式成型,用加工精密的内外钢套模组合定型,将主钢筋张拉完成后,即浇筑混凝土一次成型,经静定时间后蒸汽养护.三阶段工艺系按上法先浇制混凝土管芯,成型后再在管芯上缠绕预应力钢丝,用机械或电热法张拉,然后再喷盖水泥砂浆保护层,以防钢丝生锈,经水压试验合格后出厂使用。 数设带承插口的钢筋混凝土预制管挖沟徽设.平口对接的钥筋混凝土预制管除挖沟徽设外,还可采用顶管施工(见取水构筑物施工)。挖沟后按设计规定在沟底铺一层黄沙或石子,再用起重机械将预制管逐节吊人沟内、找正位!,在插口上套上橡胶密封圈后,往前一节的承口方向水平加力拉紧,使插口和橡胶圈同时均匀地嵌人承插口内,按此步探依次进行下一节管的安装.橡胶圈本身的直径略大于承插口间尺寸,并有规定的压缩比及防老化剂。在承擂口内侧采用钢衬圈和密封环进行环向水压试验.水压试验的标准按设计和规范要求。安装后进行回坟土,要求在两侧均匀回填分层夯实。 预应力钢筋混凝土管自重较大,在软土地区使用时要做混凝土基础。
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