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乐高玩具是真的离谱,这么高的转速齿轮还能捏和不崩盘,原理就是用一堆乐高齿轮提高转速, 最开始还只是小型的漩涡,到后面逐渐离谱。


let's look at how paper board is manufactured trucks load logs of harvested trees into a debarking trump with their stripped of their bark from there they are fed into a chipper the logs are cut into small chips, which are then for quality reasons screened to remove unwanted sizes the result is perfect wood chips the best start for the pulp making process the chips are refined into individual fibers the fibers are washed and bleached in a multiple stage process this process produces pulp that is clean and white to the highest standards water is added and after passing through a series of fiber screenings followed by bleaching the mechanical pope is ready for use however, the process also requires chemical pulp the inner layers of mechanical pulp add strength in bulk, while the dual outer layers of bleached chemical pulp give paper board its superb surface printability and strength properties like bending stiffness many of the paper board superior properties are created at the first section, which start shaping the pulp into board the first layer is formed on a bottom wire and the water drains downwards the middle layers are formed consecutively above the first and stabilized by individual upper wires through which water is removed upwards by suction the final ply is formed separately in combined with the other four in order to achieve the desired characteristics sandwich between two felts the paper board is pressed between hard rolls the water is effectively removed with the moisture content in the paper board at the end of the press section having fallen to about 50 percent then comes the drying section where the board passes over steam heated polished cylinders which gradually further reduce its moisture important strength properties are established here the steam heated machine glazing cylinder dries the web without any loss of thickness ensuring excellent stiffness properties this surface treatment is key for producing top quality folding box board at the surface sizing stage a start solution is applied to both sides of the web to prepare it for coating it binds the fibers to the surface and add strength to the board the paper board is then press between steel rolls to further even out the surface and increase smoothness this also controls the board's thickness and density a white pigmented coating is applied and smoothed out over the surface this can be done on one or both sides depending on the product each layer is dried independently by infrared dryers the paper board is then reeled onto a large steel core the massive roll is then cut down into smaller reels some reels are wrapped for dispatch director customers others are sheated into customer specified sizes。

地球仪是如何制造的?在公元五世纪前,人们都以为地球是方的。直到六世纪,古希腊哲学家必打戈拉斯第一次提出地球应该是圆的。后来经过天文学家不断地证实,地球其实是一个赤道,半径为六千三百七十八点一四千米,合集半径为六千三百五十六点七六千米的椭圆形。 为了更好地描述地球地貌和各个国家之间的地理关系,地球依旧诞生了。制造它要从这一大卷硬纸板开始。切割机先将纸板切成小块,再为纸板涂上一层胶水。然后将纸板贴在地图的背面,并将它送进热滚压机,压式牢固,每张地图就代表一个半球。 接着再用强力压制机将地图裁成风车状。这个过程一定要小心谨慎,对其裁切的位置如果有一毫米错误,就可能导致一个国家丧失几百万平方的土地。然后移除多余的硬制板,剩下切割出来的风车状地图。接下来再通过墙 压制机裁出风车状的内衬。现在将地图和内衬合在一起,放在半球形的模具上。随着模具升高,将地图和内衬推入高温磨槽内,几分钟后降下模具,一个北半球就做好了。 南半球也用同样的方法制作。高温磨槽内有凸起的地形,地貌会在地图上压制出浮雕效果。接着将两个半球组装起来。通过这台机器,将南北半球的边缘修理整齐, 再为两个半球的边缘内部涂上胶水。然后将北半球套在硬纸内环上,再将它翻过来,并将南半球也套在硬纸内环上。这个过程一定要对其精读, 要不然小日子可能会跑到非洲大陆去。再用一条蓝色胶带遮住缝隙,同时也标示出赤道的位置。最后将地球仪固定在弧形架上, 就可以使用了。地球以主要用于地理课堂的教训来帮助我们更好的了解世界。话说你还记得地球有几大洲几大洋吗?不要告诉我你的地理是体育老师教的。好了,我是纪录片大师,如有错误,请专业人士指证。下期还想看什么东西的制造过程,评论区留言告诉我。

嗨,小朋友们,我们又见面啦,我是金明幼儿园的曾梦雅老师。今天呢,曾老师依旧给大家带来一个科学小游戏制造漩涡,让我们一起去看一看旋涡是如何制造出来的吧! 鼓励讲科学 大家好,我是鼓励。旋涡是怎么形成的?水和空气向同方向快速旋转,就会形成旋涡。 旋涡中的物品会随着旋涡旋转,最后进入旋涡中心。 生活中有很多制造漩涡的方法,如快速搅拌杯中的水,或者迅速转动瓶身,会形成短时间的旋涡。 在容器内安装搅拌装置,形成较长时间的旋涡。除了手动搅拌和转动之外,水从容器下方的小孔快速流出, 也会形成旋涡。在大自然中,冷空气和热空气相遇时,常会形成旋涡,叫做龙卷风。你发现了几种制造旋涡的方法呢?好了,今天的探索就到这里,我们下次再见。 小朋友,你们的漩涡制造出来了吗?赶紧分享给老师看看吧!

一根棍子晃一晃就能发电,这就是国外发明的新型风力发电机,它身上一片扇叶都没有,就能凭空产生电力。奥秘就在于它驾驭了一种曾经让大桥坍塌的自然力量。卡门涡接效应。当风吹过这根棍子 会形成强烈的空气旋涡,这些旋涡推着棍子开始有节奏的左右摇摆,这种摇摆的动能被巧妙的转化成电力,而且不管风从东南西北哪个方向来,它都能照单全收。 因为它没有叶片,所以运转起来几乎听不到噪音。它的制造成本只降百分之五十三,维护成本更是锐减百分之八十,对鸟类零风险。同样占地范围内,它的装机容量可以达到传统风机的两倍,让风能利用空间实现最大化。 这根棍子采用玻璃纤维和碳纤维复合材料,确保在持续摇摆状态下能稳定工作三十年以上。目前从未家庭供电的迷你版到灶瓦级的工业版本都在推进中,这项技术正在开启风电领域的新纪元。



下面这位小伙子将难度升级,他打算全部用纸壳制造一辆兰博基尼。小伙子首先在电脑上查阅了不同型号兰博基尼的外形,牢记在心里以后就开始准备纸张。 小伙子做事情还是十分认真的,每一张纸张零件都亲自用手画出来,地上的纸板越堆越多。忙活了大半天,车体部分的零件终于完成了。接下来小伙子开始制作动力部分,动力和传动部分的难度系数很明显高于车体, 四个轮胎轮毂都是用纸壳支撑完成的。最后就是拼装过程了,小伙子从早上忙到晚上,兰博基尼的外形也一点一点显现出来了。整辆汽车的线条是严格按照真车来设计的,不管从哪个角度看都透露出一股帅气。 最后小伙子还给汽车装上了一个简易车牌。到此为止,纸壳兰博基尼就彻底完工了。感谢收看本期节目,喜欢记得点赞和关注我们!

小芳,你干啥呢?你小学没玩过吗?水平能制造漩涡,如果能运用到球鞋上,那有多好看哎。还真的有飞啦旋涡鞋,这种就是融合旋涡元素,经典复古的比拉斯沃,延续复古外形,鞋面少量的橙蓝色块相当亮眼。而大面积的网眼设计,让你的脚在夏日也能保持干爽。你试按下中敌 哎,这中底还挺软的。是啊,他们中底的橡胶不仅弹,而且还很轻哎,那旋涡在哪呢?底面就是你最爱的一体旋涡设计,除了好看之外,防滑性能上也有显示器。 除此之外,内靴的设计让包裹性大大真强。而且这双鞋相当好搭,各种风格的造型都能轻松驾驭,这双鞋可以吧?可以。