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研发工程师
来自话题:
污水使用那些水泵? 主要材质[1]气动隔膜泵其有四种材质:塑料、铝合金、铸铁、不锈钢。电动隔膜泵其有四种材质:塑料、铝合 ... 刚才也了解了点,在某些方面确实有优势,我们这一片区这种泵使用都很少,看来还是有市场的 查看更多
什么叫热裂纹,冷裂缝?产生的原因是什么?如何防止? 楼主问的应该是金属焊接中的热裂纹和冷裂纹. 说的比较简单一点热裂纹就是焊接过程中在温度较高、冷却过程中就出现的裂纹,原因主要是晶界产生低熔点物质,在应力作用下开裂,裂纹一般是沿着晶界开裂。 冷裂纹就是焊缝基本冷却以后出现的裂纹,这个时间会很长,有的很多年后才出现裂纹。主要原因是内部氢(少数也有可能其他气体)析出聚集造成微型高压力空间,在应力作用下延展开裂,裂纹有沿着晶界开裂,也有贯晶开裂,形式多样,有的能在断面上找到细微的点状气孔。 至于详细具体的原因和防治方法,要根据具体金属化学成分来分析。关于这方面的资料其实很多,你可以找来学习。查看更多
AutoCAD plant3d2015 ISO的入口在哪里啊? 你把视图面板打开,自己添加一下呗查看更多
设计原则6:有毒流体? 有毒的流体走管程,因为可减少泄漏的机会。查看更多
大家讲讲空分国内外为什么有差距?工艺原因还是设备制造 ...? 技术上国内的应该差不多了,主要是在设备制造、材料等各方面还是差距不小。查看更多
来自话题:
大批量钠砂如何制作? 楼主所言这些并不关键 放大时防火是关键 设备大了若有空气,旋即起火 因此要倍加小心,防护器材,逃跑通道,都要事先备齐备好 投料最好是整包装的,避免二次 准备好吸油布吸收钠的保护油 投料时危险不大,过程与切换时要注意查看更多
施工危险,教你如何化险为夷,欢迎大家来补充(正在进行 ...? 图文并茂,学习。查看更多
来自话题:
循环水处理? 请问循环水处理剂的主要成分有哪些,具体一点,谢谢!查看更多
请教朋友新建装置初顶和常顶油水分离器都设有安全阀吗? 按照设计规范,压力容器要设安全阀查看更多
aspen中component 输入的时候,未知组分如? 严格模拟计算的基础就是基于对进料流股的全分析数据,如果连组分都不能决定,模拟计算将无法进行。 我们在工程计算的时候,很多不知道的物性,都是用类似的物质代替,也是很多工程公司用到的方法,当然,是不会影响反应的情况,你可以去咨询下,有时候是业主要求,有时候是老工程师常用的方法,这个只是计算,在工程实际用的时候,很多数据都需要处理,不存在准确多少的问题,除非是已有的装置做模拟指导操作的情况,你说的问题,不存在。个人意见,请大家指正查看更多
NPRA年会\NPRA2006文献? 多谢提醒!文章太多,试试!查看更多
小心勿犯:学英语最要命的5个坏习惯? 1.记住该记住的,忘记该忘记的。改变能改变的,接受不能改变的   remember what should be remembered, and forget what should be forgotten.alter what is changeable, and accept what is mutable.      2.能冲刷一切的除了眼泪,就是时间,以时间来推移感情,时间越长,冲突越淡,仿佛不断稀释的茶   apart from tears, only time could wear everything away. while feeling is being processed by time, conflicts would be reconciled as time goes by, just like a cup of tea that is being continuously diluted.      3.怨言是上天得至人类最大的供物,也是人类祷告中最真诚的部分   complaints are the greatest offerings that god obtains from human beings, as well as the most faithful prayers human beings might utter to god.      4.智慧的代价是矛盾。这是人生对人生观开的玩笑。   wisdom appears in contradiction to itself, which is a trick life plays on philosophy of life.      5.世上的姑娘总以为自己是骄傲的公主(除了少数极丑和少数极聪明的姑娘例外)   girls always look on themselves as proud princesses, with the exception of a small number of either extremely ugly or exceedingly smart ones.      6.如果敌人让你生气,那说明你还没有胜他的把握   it can be inferred that you lack confidence in a victory over your rivals from the fact that you’re irritable against them.      7.如果朋友让你生气,那说明你仍然在意他的友情   from that you would get angry with your friends, we can conclude you sitll care about the friendship between you.      8.令狐冲说“有些事情本身我们无法控制,只好控制自己。” 可是,他算什么!!   “ something is out of our control, so we have to command ourselves.“ said linghu chong, a known character in a chinese novel about persons adept in martial arts(武侠小说?). who is, however, **ing he?      9.我不知道我现在做的哪些是对的,那些是错的,而当我终于老死的时候我才知道这些。所以我现在所能做的就是尽力做好每一件事,然后等待着老死。   only till my natural death.could i tell which of what i have been doing is right or wrong, so now i have to try to do well in everything, and then wait to die a natural death.      10.也许有些人很可恶,有些人很卑鄙。而当我设身为他想象的时候,我才知道:他比我还可怜。所以请原谅所有你见过的人,好人或者坏人   some may be wicked, and some may be despicable. only when i put myself in their position did i know they are more miserable than i. so forgive all that you have met, no matter what kind of persons they are.      11.鱼对水说你看不到我的眼泪,因为我在水里.水说我能感觉到你的眼泪,因为你在我心里。   “you couldn’t see my tears cause i am in the water.“ fish said to water.   “but i could feel your tears cause you are in me.“ answered water.      12.快乐要有悲伤作陪,雨过应该就有天晴。如果雨后还是雨,如果忧伤之后还是忧伤.请让我们从容面对这离别之后的离别。 微笑地去寻找一个不可能出现的你!   happiness is accompanied by sorrow, and it would turn sunny after rain as well. if rain remains after rain and sorrow remains after sorrow, please take those farewells easy, and turn to smilingly look for yourself who is never to appear.      13.死亡教会人一切,如同考试之后公布的结果??虽然恍然大悟,但为时晚矣!   like the outcome after an exam, death makes us aware of anything, that is, it’s too late to take a tumble.      14.你出生的时候,你哭着,周围的人笑着;你逝去的时候,你笑着,而周围的人在哭!   when you were born, you’re crying but lookers-on were smiling. when you are passing away, you’re smiling but lookers-on are crying.      15.男人在结婚前觉得适合自己的女人很少,结婚后觉得适合自己的女人很多   man might think that few women fit him before his marriage, and contrarily when they get married.      16.于千万人之中,遇见你所遇见的人;于千万年之中,时间的无涯荒野里,没有早一步,也没有晚一步,刚巧赶上了   among thousands of people, you meet those you’ve met. through thousands of years, with the boundlessness of time, you happen to meet them, neither earlier nor a bit too late.    17.每个人都有潜在的能量,只是很容易:被习惯所掩盖,被时间所迷离,被惰性所消磨.   everyone has his inherent ability( power or capacity?) which is easily concealed by habbits, blured by time, and eroded by laziness( or inertia?).      18.人生短短几十年,不要给自己留下了什么遗憾,想笑就笑,想哭就哭,该爱的时候就去爱,无谓压抑自己   be sure that you have never had any regrets in your life which only lasts for a few decades. laugh or cry as you like, and it‘s meaningless to oppress yourself.      19.《和平年代》里的话:当幻想和现实面对时,总是很痛苦的。要么你被痛苦击倒,要么你把痛苦踩在脚下   while our dream is confronted with the reality, you always feel painful. just trample on the pain, or you‘ll be beat down by it.      20.真正的爱情是不讲究热闹不讲究排场不讲究繁华更不讲究嚎头的   a true love is what doesn‘t strive for busyness, for extravagance, for luxury, and moreover for hokum.      21.生命中,不断地有人离开或进入。于是,看见的,看不见了;记住的,遗忘了。生命中,不断地有得到和失落。于是,看不见的,看见了;遗忘的,记住了。 然而,看不见的,是不是就等于不存在?记住的,是不是永远不会消失?   there is someone that is coming or passing away in your life around the clock, so you may lose sight of those seen, and forget those remembered. there is gain and loss in your life, so you may catch sight of those unseen, and remember those forgotten. nevertheless, doesn‘t the unseen exist for sure? will the remembered remain for ever?      22.我们确实活得艰难,一要承受种种外部的压力,更要面对自己内心的困惑。在苦苦挣扎中,如果有人向你投以理解的目光,你会感到一种生命的暖意,或许仅有短暂的一瞥,就足以使我感奋不已。   it‘s true that we have been leading a difficult life, for we need not only to be under various external pressures, but also to be in the face of internal perplexities.you would be affected by the warmth of life if someone gives you an understanding look during your bitter struggle.even a mere glance would make you moved and inpired.      23.我不去想是否能够成功,既然选择了远方,便只顾风雨兼程;我不去想,身后会不会袭来寒风冷雨,既然目标是地平线,留给世界的只能是背影.   i wouldn‘t care success or failure, for i will only struggle ahead as long as i have been destined to the distance. i wouldn‘t care the difficulties around, for what i can leave on the earth is only their view of my back since i have been marching toward the horizontal.   24.后悔是一种耗费精神的情绪.后悔是比损失更大的损失,比错误更大的错误.所以不要后悔   penitence is something that enervates our spirit, causing a greater loss than loss itself and making a bigger mistake than mistake itself, so never regret.查看更多
主冷纯度为什么不能太高? 没有这个说法吧! 如果液氧纯度要求大于99.6%,也没必要追求较高的纯度! 能耗、氧提取率也受影响查看更多
来自话题:
一个从真菌中分离出的化合物(续)? 谢谢您得指点. 我近期将做该物质的dept和2dnmr。 通过近期看您的帖子,我发现您从一维谱中就能读出很多信息。尤其是您分析氢谱的本领令人望尘莫及。 近两天有机网似乎不太稳定。查看更多
来自话题:
汽包内部定排出口的位置? 你说的应该是事故防水或者是连拍,如果管子很多的话就是连排。定排一般都在最低点,另外看管径也能知道,不行就传图纸上来, 查看更多
Aspen 正常安装了无法使用? pj=crack,安装包里一般都有说明 谢谢 我试试查看更多
来自话题:
2004美国专利做辅酶Q10的方法!? 据俺了解,国内合成辅酶q10的方法都是这种美国专利报道的方法.其实这个专利已经不专了.查看更多
煤化工聚乙烯装置进展情况? 1、内蒙古中煤蒙大新能源化工有限公司和宁夏宝丰煤制烯烃项目这两个项目至少明年开车。因为我们有设备在那,我们调试完才会开车。 2、陕西延长中煤榆林能源化工有限公司这个我去了,今年下半年能开车。 3、中煤陕西榆横煤化工项目,这个项目也是今年8月份左右开车,现在设计院已经准备撤了。 陕西延长的项目你直接找sei去联系他们装置领导。查看更多
来自话题:
甲醇空冷器的结蜡问题? 应该停车处理。查看更多
来自话题:
罗茨鼓风机盘车无法盘动? 把联轴器断开各个盘车确定是否盘动。如都能盘动就确定联轴器间距,是否过大过小,这种情况可能把轴承压死导致盘不动车。再看一下对中情况是否偏差太大。查看更多
简介
职业:福建湄洲湾氯碱工业有限公司 - 研发工程师
学校:青岛理工大学 - 自动化工程学院
地区:四川省
个人简介:一个人静静的看着书发呆,跟无聊拉近距离了呢~查看更多
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