点击切换搜索课件文库搜索结果(5705)
文档格式:PPT 文档大小:4.33MB 文档页数:192
17. 1 基本概念 17. 2 活性污泥法处理系统 17.3 活性污泥法主要设计参数 17.4 活性污泥反应动力学基础 17.5 活性污泥处理系统的运行方式 17. 6 曝气的基本理论 17. 7 活性污泥处理系统的工艺设计 17. 8 活性污泥处理系统的运行管理
文档格式:PPT 文档大小:1.01MB 文档页数:116
一、氮在水中的存在形态与分类 二、氨化与硝化反应过程 三、硝化反应的条件 四、反硝化 五、硝化、反硝化反应中氮的转化
文档格式:PPT 文档大小:397.5KB 文档页数:50
1、厌氧生物处理基本原理 2、厌氧消化的影响因素与控制要求 3、两级厌氧与两相厌氧处理 4、厌氧生物处理工艺与反应器 5、厌氧生物处理的运行管理 6、思考题 7、习题
文档格式:PPT 文档大小:31.19MB 文档页数:112
遗传: 亲代与子代相似. 变异: 亲代与子代、子代间不同个体不完 全相同. 遗传(inheritance)和变异(variation)是 生命的最本质特性之一 遗传型: 表型(表现型):
文档格式:PDF 文档大小:637.46KB 文档页数:11
The term computer graphics refers to the generation,representation, manipulation, processing, and display of data by a computer. Computer-generated images may be real or imagined, animated or still, two-dimensional (2-D) or three-dimensional (3-D).Today most computers, particularly those in the PC,Macintosh, or workstation categories
文档格式:PDF 文档大小:219.91KB 文档页数:7
Computer networks are geographically distributed collections of communication links and switching proces￾sors, the purpose of which is to transport data between computers, workstations, and terminals. In general the elements of a computer network must follow compatible rules of operation together to function effectively. These rules of operation are known as protocols
文档格式:PDF 文档大小:557.49KB 文档页数:28
The last decade has seen a revolution in software engineering tools and techniques. This revolution has been fueled by the ever-increasing complexity of the software component of delivered systems. Although the software component of delivered systems may not be the most expensive component, it is usually, however, “in series” with the hardware component; if the software doesn’t work, the hardware is useless
文档格式:PDF 文档大小:714.82KB 文档页数:47
The true language of computers is a stream of 1s and 0s—bits. Everything in the computer, be it numbers or text or program, spreadsheet or database or 3-D rendering, is nothing but an array of bits. The meaning of the bits is in the “eye of the beholder”; it is determined entirely by context. Bits are not a useful medium for human consumption. Instead, we insist that what we read be formatted spatially and presented
文档格式:PDF 文档大小:937.86KB 文档页数:34
devices the techniques were tailored to gate networks of the type described above. The term gate was already in use in the forties to denote the logical elements discussed earlier. There are very many good references on Boolean algebra and we may quote only a selected few of them. Suffice it to mention the texts by Hill and Peterson [1974], Kohavi [1978], and Hohn [1966]. These books give
文档格式:DOC 文档大小:59KB 文档页数:6
环境容量是指人类和自然环境不致受害的情况下,其所能容纳的污染物的最 大负荷。 特定的环境(如城市、水体等)的容量与该环境的社会功能、环境背 景、污染源位置(布局)、污染物的物理化学性质以及环境自净能力等因素有关。 一般所指的环境容量是在保证不超出环境目标值的前提下,区域环境能够容许的 污染物最大允许排放量
首页上页562563564565566567568569下页末页
热门关键字
搜索一下,找到相关课件或文库资源 5705 个  
©2008-现在 cucdc.com 高等教育资讯网 版权所有