管 Ⅰ名词1.(管子) pipe; tube 气管 windpipe; trachea; 水管 water pipe; 吸管 siphon; 滴管 dropper2.(吹奏的乐器) wind musical instrument 双簧管 oboe; 单簧管 clarinet3.(形状似管的电器件) valve; tube 晶体管 transistor; 电子管 electron tube4.(动植物体内细长的中空组织; 通道或管道) duct; canal; vessels 胆管 bile duct; 淋巴管 lymphatic vessel; 门脉管 portal canal5.(古国名) guan, a state in the zhou dynasty6.(姓氏) a surname 管仲 guan zhongⅡ动词1.(管理) be in charge of; manage; run; supervise 管家务 run the house; keep house; 管生产 be in charge of production; 同时管十台机器 tend ten machines at the same time2.(管辖) administer; govern 这所大学由省直接管。 this university is directly under the province.3.(管教) subject sb. to discipline 管孩子 control a child; 孩子要管, 但更要引导。 children need discipline, but they need guidance even more.4.(担任) take on; shoulder 你管宣传。you are charged with propaganda.5.(过问) mind; interfere; bother about 别管我! don't bother about me. 少管闲事。 mind your own business. 我才不管呢! i can't be bothered. 怎么管不着? why shouldn't we interfere?6.(保证; 负责供给) guarantee; assure; provide 管退管换 replacement of defective goods guaranteed; 管吃管住 provide food and accommodationⅢ形容词(狭隘; 有限) narrow; restricted; limited; small 管见 my humble opinionⅣ量词(用于细长圆筒形的东西) 一管牙膏 a tube of toothpaste; 两管钢笔 two pensⅤ介词(作用近似“把”, 专跟“叫”配合) 管他叫小胖子 be known as “little fatty”; be called “little fatty”Ⅵ连词[方言] (不管, 无论) no matter (what, how, etc.) 管你怎么说, 他都不会相信你。 no matter what you may say, he will not believe you. 管他想什么, 都没关系。 whatever he thinks doesn't matter
Firstly , working theory and structure of concrete pump are lucubrated . and the flowing state of the concrete in duct is analyzed by virtue of the rheology theory . secondly , the flowing model of concrete in duct is established , with that , the pressure loss of concrete flowing in duct is analyzed , too 论文首先对混凝土泵的工作原理和结构进行了综合分析;基于流变学原理,深入分析了泵送混凝土在输送管中的流动状态,建立了混凝土在管道中的流动模型,分析了混凝土在管道中流动的压力损失;基于运动学和动力学基本原理,对混凝土s管阀的运动学和动力学进行了分析。