水管共振怎么消除

18026482022-10-04 11:39:541条回答

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庆军共回答了18个问题 | 采纳率83.3%: 改变水的流速,取消振动源.
改变流速的办法,开阀的大小,换个水龙头就好了.
改变固有频率,（这个比较麻烦）换管.; 1年前

怎样清除塑料水管异味 weiqcf1年前2: 631386328 共回答了19个问题 | 采纳率94.7%

1、牛奶去味法：先用洗洁剂清洗干净,然后往塑料杯中倒入两汤钥匙鲜牛奶,盖上盖子,摇晃,使杯中每一个角落跟牛奶接触,约一分钟,最后倒掉牛奶,将杯子清洗干净.
2、桔子皮去味法：先用洗洁剂清洗干净,然后将新鲜桔子皮放入中,盖上盖子,放约3到4个小时涮干净即可.
3、用废茶叶除味.杯子里有腥味,先用废茶叶擦洗,再用清水冲净,腥味即除.
4、用盐水泡30分钟.

1年前查看全部

家装水管如何选用 大山之女1年前1: 北堂鳴風共回答了14个问题 | 采纳率100%

1.“摸”：质感是否细腻,颗粒是否均匀.现在市场上PPR管主要有白灰绿几种颜色,一般情况下,回收塑料做不成白色,所以许多人往往认为白色的才是最好的,其实这种观点比较片面.随着技术的更新提高,颜色不是辨别PPR管好坏的...

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如何阻止老鼠水管 晴空hh1年前1: 释放自己816 共回答了16个问题 | 采纳率100%

老鼠可能从下水道里爬上来
家中常见的老鼠一般有两种：阴沟鼠和小家鼠.
阴沟鼠进入屋内有四种方式.
最常见的入室途径来自下水道.洗菜池或者洗衣池下的网漏如果不严密,老鼠就会爬上来.对于阴沟鼠来说,只要管道的直径在10-13厘米之间,它就可以在里面攀爬了.普通家庭的下水道直径都在10厘米以上.
阳台落水管和抽水马桶也是老鼠进入室内的通道.空调室内外的管子如果接逢不严密,老鼠也很容易钻进房间.
虽然是从下往上爬,但老鼠的体力足以支撑它一口气爬个三四楼.
小家鼠则在老房子里比较常见,它们大都生活在沙发、抽屉、纸板箱、旧家具里.家鼠的体积很小,最大不超过20克.平时吃点米粒和面包屑就可以过活了.
小家鼠基本上只在室内生活.如果8年左右的房子里出现家鼠,那很有可能是主人在买一些大件家电时,小家鼠就躲在包装箱里.也有可能是邻居家的家鼠,趁机从门逢里钻进来的.

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水管Φ40 多大 Anson1161年前1: linlilu 共回答了16个问题 | 采纳率100%

PPR外径40mm相当于有缝管1.2吋.

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怎样堵塞水管 风妖娆1年前1: 水手跋涉共回答了19个问题 | 采纳率89.5%

在下水道里扔一个比水管小以点点的石头就可以堵住水管了

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水管英文翻译 shamomao1年前4: glymglym 共回答了7个问题 | 采纳率14.3%

tube

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水管中水速度增大压强减小, 叫我奶嘴1年前3: kiroro628 共回答了27个问题 | 采纳率92.6%

水管中水速度增大压强减小,对平的水管对,压强是否减小要根据这个p+ρgh+(1/2)*ρv^2=c来确定　式中p、ρ、v分别为流体的压强、密度和速度；h为铅垂高度；g为重力加速度；c为常量.

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阅读理解 You may picture firefighters holding a hose (水管) o 阅读理解 You may picture firefighters holding a hose (水管) outside of a burning building,but the Golden Eagles Hotshots don't fight fires quite that way.When they go into action,you may not even see a fire truck. The Hotshots are firefighters who battle fires in wilderness areas.But don't think you'll only find them in their home state California.Wherever there is a national wildfire emergency,the Golden Eagles Hotshots could be there. But these firefighters don't work the same way as firefighters in a big city.They work in areas where there are large numbers of trees,bushes,and grass.They climb up and down steep hills to clear brush and burnable debris (残骸).They sometimes use water,but they often fight fire with fire! They do that by lighting what are called "backfires",which are small,controlled fires that burn up fuel in the path of larger wildfires.That way,when the Wildfire gets there,it has nothing to burn and nowhere to go,because all the burnable fuel has already gone up in smoke. The Hotshots also clear away fuel using oldfashioned hard work.For example,they use a saw to cut away trees and heavy brush that could catch fire. Of course there are times when the Golden Eagles Hotshots do have trucks to supply water to the fires. But the water is limited,and these guys have to rely on hard work more than anything.Physical fitness is very important.They have to be in great physical shape to handle steep hills and difficult terrain (地形) while carrying a 60-pound pack. The Golden Eagles Hotshots definitely work hard for their pay.But thanks to their efforts,many lives have been saved,many houses have not burned,and countless trees are still standing. 1.The firefighters mentioned in the passage________. A.do much of their work in California B.avoid climbing steep hills in their work C.do their work equipped with advanced tools D.carry out their work mostly in forests and mountains 2.According to the passage,why do the firefighters light "backfires"? A.To signal for help. B.To remove obstacles. C.To protect trees and bushes. D.To prevent the fire from spreading. 3.What can we learn about the Golden Eagles Hotshots A.They are firefighters working in big cities. B.Their work requires physical strength. C.They are voluntary firefighters working for free. D.They usually hold a hose to put out the fires. 4.What is the author's attitude towards the Golden Eagles Hotshots? A.Appreciative. B.Doubtful C.Worried. D.Critical. kellyzac1年前1: Manduty 共回答了19个问题 | 采纳率94.7%

1-4:DDBA

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水管共振怎么消除

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