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化工研发
关于防雷接地电阻测量,用什么仪表测量? 给你推荐一种仪表。国产的ms5209接地电阻测试仪。查看更多
压力容器应力分析有限元计算软件? 来看看有没需要的 代茂林于2012-9-8 09:57补充以下内容: 就是没有积分啊 代茂林于2012-9-8 09:57补充以下内容: 纠结,着呢个东西查看更多
来自话题:
脱盐水站反渗透保安过滤器\反渗透装置的工作原理? 直接装在哪个罐子里面不就好了吗? 哈哈!查看更多
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可燃气体探测仪必须在现场设置声光报警吗? 不设置声光报警,员工如何知道可燃气体泄漏或超标呢? 我们以前单位是2007年竣工的 当时现场没有设置声光报警 但是在门卫保安室可燃气体报警控制器终端上设有圣光报警 查看更多
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钢骨架塑料复合管在纯碱工艺能使用吗? 钢塑管的适用温度和压力大概是什么范围呢?查看更多
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发现4-烷基环己酮的新合成方法? 不好意思,是酰基酚, 查看更多
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合成工段中,安全阀有什么要求??是否有氨用安全阀? ...? 有氨用安全阀的啊。查看更多
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关于灰水循环泵轴承体裂纹的问题? 首先,你说的轴承体可以理解成轴承箱体吗? 铸铁焊接,焊前预热一定要的,焊后热处理也一定要做,找个就出 ... 已经焊完了。。泵试运行,轴承体温度太高,是否是因焊接变形引起的。。找正数据我已经查看过,相差不是很大查看更多
关于有色金属铅冶炼? 要的话 加我q 我资料上有。。。查看更多
节日英语:April Fool's day 愚人节的小知识? 明天就是西方的愚人节——一年中少有的一个心惊胆战的节日。在这一天,您可以充分发挥想象力,让有序的时间和空间在您手中瞬时翻转,胡作非为在“愚人节”完全有充分的理由和充足的市场。 the origin of april fool's day there are different versions as to the origin of april fool's day.the most widespread theory links the day to gregorian calendar reform while others involve mythological legends or anthropological explanations. 关于“愚人节”的来源有各种不同的说法,有人说与一群不愿接受公历纪年的法国保守者有关;也有人说它来源于纪念丰收女神的女儿被诱拐到地狱;还有人说,这个节日始于英国一个名叫“愚人村”的天才村民;另一些说法则认为春天的天气变化无常,因此人们在春分前后可以选择某一日颠倒乾坤,以荒诞的闹剧来迎接春神的到来...至于哪种说法更为可信,全凭您“拭目”定夺喽! april fool's dictionary has it ever occurred to you that the word "fool" is used in many different and often contradictory ways? the bible says "speak not in the ears of a fool, for he will despise the wisdom of thy words," but shakespeare often used "fools" in his plays as vehicles for wisdom and telling the truth. 不要小看fool,它可是大有学问的吆。《圣经》中有很多关于“愚人”的有趣表达,如:“不要跟傻子说话,他只会鄙夷智者的言论”。在莎翁的戏剧里, fool也常常出现,但这时的“愚人”可不是傻子而是绝顶聪明的“宫廷小丑”,他拿愚蠢作护身符说出一般人不愿说出的真话,很应了我们汉语中“大智若愚” 的至理名言。 trickery in april fool's day april fool's day is the only day of the year when you can play tricks on people and needn't worry about them getting angry! here we also introduce to you some moderate pranks. just remember, play safe and have fun! 4月1日,一年中一个既特别又让人胆战心惊的节日,不知这一天会有多少神经细胞因劳神过度而含冤死去。今年的愚人节,我们除了向您介绍四个独具特色的庆祝方式之外,不得不紧随时代需要推荐三个无伤大雅的恶作剧。在您释放心情的一霎那,愿您的朋友也能开怀一笑! enchanting april fool's postcard it is said that early april is the season for yong fish. not only are they easier to catch, but they are more tender and fresh in early april than in other seasons. accordingly, the yong fish makes a perfect mascot for april fool's day. these fish postcards will bring you hours of fun and entertainment. come on, take a look! 人们说,初春的鱼儿味道最鲜美也最容易上钩,不言而喻,笨笨的鱼儿应是四月愚人节的主角。我们精选了几张独具特色的“鱼儿”明信片,在您玩腻了费尽心思的“愚”人游戏之后,不妨进入我们“特别关注”的最后一个环节——轻轻松松欣赏嬉戏耍乐的鱼儿,愚人节“不愚人”又何尝不是一种独具特色的庆祝方式呢? 英文介绍 april fools' day is a day to play jokes on others, no one knows how this holiday began but people think it first started in france. in the 16 th century, people celebrated new year's day from march 25 to april 1. in the mid—1560s king charles ix changed it from march 25 to january 1. but some people still celebrated in on april 1, so others called them april fools. each country celebrates april fools' day differently. in france, people call the april fools “april fish”. they tape a paper fish to their friends' backs to fool them. when he or she finds this , they shout “april fish!” in england, people play jokes only in the morning. you are a “noodle” if someone fools you. in scotland, april fools' day is 48 hours long. they call an april fool “april gowk”. gowk is another name for a cuckoo bird. in the america, people play small jokes on their friends and any other people on the first of aprol. they may point down to your shoe and say, “ your shoelace is untied.” if you believe them and look down to see, you are an april fool then. history of april fool's day the history of april fool's day or all fool's day is uncertain, but the current thinking is that it began around 1582 in france with the reform of the calendar under charles ix. the gregorian calendar was introduced, and new year's day was moved from march 25 - april 1 (new year's week) to january 1. communication traveled slowly in those days and some people were only informed of the change several years later. still others, who were more rebellious refused to acknowledge the change and continued to celebrate on the last day of the former celebration, april 1. these people were labeled "fools" by the general populace, were subject to ridicule and sent on "fool errands," sent invitations to nonexistent parties and had other practical jokes played upon them. the butts of these pranks became known as a "poisson d'avril" or "april fish" because a young naive fish is easily caught. in addition, one common practice was to hook a paper fish on the back of someone as a joke. this harassment evolved over time and a custom of prank-playing continue on the first day of april. this tradition eventually spread elsewhere like to britain and scotland in the 18th century and was introduced to the american colonies by the english and the french. because of this spread to other countries, april fool's day has taken on an international flavor with each country celebrating the holiday in its own way. in scotland, for instance, april fool's day is devoted to spoofs involving the buttocks and as such is called taily day. the butts of these jokes are known as april 'gowk', another name for cuckoo bird. the origins of the "kick me" sign can be traced back to the scottish observance. in england, jokes are played only in the morning. fools are called 'gobs' or 'gobby' and the victim of a joke is called a 'noodle.' it was considered back luck to play a practical joke on someone after noon. in rome, the holiday is known as festival of hilaria, celebrating the resurrection of the god attis, is on march 25 and is also referred to as "roman laughing day." in portugal, april fool's day falls on the sunday and monday before lent. in this celebration, many people throw flour at their friends. the huli festival is celebrated on march 31 in india. people play jokes on one another and smear colors on one another celebrating the arrival of spring. so, no matter where you happen to be in the world on april 1, don't be surprised if april fools fall playfully upon you. 查看更多
气体分馏,丙烯产品最近为什么带丁二烯超标? 应该是脱丙烷塔操作出现问题:1、查看进料段温度是多少? 2、塔顶压力和回流罐压力差多少? 3、回流量是多少?是否仪表确定准确?查看更多
40000m3/h空分设备主换热器泄漏分析及处理? 不错,在实践中学习,在学习中进步,谢谢了!查看更多
搞空分的兄弟姐妹们,冒个泡!!!? 就要去黄河空分了,不知道会怎样查看更多
征集多晶硅设备图片专贴? 我也来几张查看更多
aspen hysys 换热器怎样估算换热面积? 缺少物性参数查看更多
来自话题:
请问煤气化都那个地方用风机啊? 水煤浆气化工艺中的煤浆制备工段磨机一级滚筒筛那地方需要风机,吸出粉尘。空分也需要风机。查看更多
来自话题:
水合肼物质? 和肼一个东西嘛?查看更多
地下罐液位的量程? 不用雷达,超声波是因为价格高,而且罐装的是污水,精度要求不高。而且有时会有细小泡沫。浮筒只能装在罐顶的地面上。如果量程2米,那浮杆底部距罐底有1.3米。罐的液位达到50%时浮筒还没显示,不知道说得对不对。查看更多
profibus协议和modbus协议的区别。复制粘贴就算了,请大 ...? modbus其实有两种,一种是普通的串口通讯modbus rtu,还有一个是modbus tcp/ip,这是一种工业以太网的协议,和profibus是同一级别的。 如果你要是随便用用通讯,不强调实时性和可靠性,modbus rtu是最简单的实现方法。否则还是用工业以太网吧,这也是发展的趋势查看更多
来自话题:
塔后氨和硫化氢的关系? 贫液含氨在23以上,氨硫比在8以上,剩余氨水进富液槽可以进一步净化,而且不堵换热器。查看更多
简介
职业:岳阳昌德化工实业有限公司 - 化工研发
学校:兰州石化职业技术学院 - 石油化学工程系
地区:广东省
个人简介:管好你的她,若我忍不了,直接两巴掌。查看更多
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