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This essay analyzes the method and procedure of ice-making recorded in Huai Nan Wan Bi Shu, and creatively proposes that the principle of "ice-making in summer" is refrigeration through the quick evaporation of water to absorb heat under low pressure, and that ice is made on the fine silk at the mouth of an urn, but not inside the urn at its bottom as it was conventionally thought. The essay points out three necessary conditions which should be fulfilled in order to realize "making ice in summer": low relative humidity (less than 26%), large volume of the urn (about 100 L) and proper air temperature (about 20℃).

分析《淮南万毕术》所载制冰方法和过程，提出低压下水快速蒸发吸热制冷是"夏造冰"的制冰原理；结冰的部位不是传统观点所认为的瓮底，而是在瓮口的嫌上；指出要实现"夏造冰"，需满足三个条件：相对湿度低（低于26%）、瓮的容积大（100升左右）、空气的温度适当（20℃左右）。

Valve at the end of energy conservation is a valve, generally installed in the suction pump at the bottom underwater.

在阀门应用中底阀是一种节约能源的阀，一般安装在水泵水下吸管的底端。

It has to be tall because it is like a giant block tackle, we have to lower into the ground haul out of the ground great lengths of drill pipe which are rotated by an engine at the top are fitted with a cutting bit at the bottom.

井架必须 ssbbww。 c om 很高， 8 Tt t 8。 com 它像一个巨型滑轮组。 sSBbWw 必须 ssbbww。 c om 把很长的钻杆一节节地钻入地下， 8ttt8.com 再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。

But development agencies must be willing to start at the bottom—at the level of the small farmer walking quietly on his treadle pump—and work their way up.

但开发机构必须愿意从基层做起，从默默踩着脚踏泵的小农民层次开始，然后再逐步向上扩展。

At Sprinkles Custom Cakes in Winter Park, Fla., Larry Bach has been getting requests for his upside-down wedding cake with the bride or groom's legs sticking out at the bottom as if the cake had crashed down on the figure a la the Wicked Witch of the East.

佛罗里达州冬季公园附近Sprinkles Custom Cakes蛋糕店的拉里·巴赫甚至接到订单，要求制作设计出一款新娘或新郎的腿从蛋糕底部伸出的蛋糕，好比蛋糕压在邪恶的东方女巫身上。

This utility model disclosed a dust removal equipment, environmental protection, their characteristics is that, including filters, dust collection equipment and negative pressure ventilation machines, referred to the vertical filter settings are arranged in descending sequence multi-aperture filter, its Set large aperture filters connected at one end of inlet pipe, set a small aperture at one end of filters connected through the vacuum exhaust fan out of the wind pipe, dust collection equipment installed in the bottom of each layer filters.

本实用新型公开了一种环保除尘设备，其特征在于，包括过滤器、集尘装置和负压抽风机，所述过滤器内垂直设置有多层孔径依次从大到小排列的过滤网，其设置有大孔径过滤网的一端连接进风管，设置有小孔径过滤网的一端通过负压抽风机连接出风管，集尘装置设置在每层过滤网的下端。

The introduction combines traditional Chinese and Western medicine below the experience of enteritis of noxiousness of fine ailment of remedial Tibet mastiff, in order to offer reference. 1 hair sick condition and clinical expression ill dog are 2~4 month more age young dog, majority is come on suddenly, anorexia or abandon absolutely, mental depressed, systemic symptom worsens quickly, produce acuteness sex vomiting and diarrhoea, puke is first feed rotten, afterwards is yellow or olive bubble mucus and hematic type thing, have diarrhoea dung has the sticky stiff thing of grey yellow, turn after for rare dung of effluvial shape of embedded mucous membrane, then shows hematic dysentery, because ill dog is acuteness vomiting and diarrhoea are rapid dehydration, eyeball cave in, temperature is shown two-way and calorific,℃ of the 40~41 at the beginning of disease, 1~2d falls it is normal to come, after 3~4d answer elevatory, die very quickly next, 4~5d of course of diseases, the temperature when on one's deathbed drops more to normal temperature the following. Bottom of stomach of dog of die in one's bed of 2 analyse check has haemorrhage sex inflammation, show cardinal, small intestine mucous membrane falls off, alvine wall attenuates, there is gules mucus inside, mix inside large intestine have show wine blood excrement and urine, there are a lot of haemorrhage places on mucous membrane, haemorrhage of rectum mucous membrane is more, mesentery lymph node enlargement, sometimes afterwards sends intussusception, alvine tangent plane bleeds, cardiac muscle is loose, color becomes weak, cystic plentiful, liver is qualitative fragile and brittle. 3 diagnose 3.1 epidemiology to diagnose this ill much hair at young dog, rather dog of epidemic disease have an inoculation feels the most easily, be affected directly or affect secondhand, basically pass enteron infection, this disease all can happen all the year round, but with cold...

下面介绍中西医结合治疗藏獒细小病毒性肠炎的心得，以供参考。1发病情况和临床表现病犬多为2~4月龄幼犬，多数为忽然发病，食欲减退或废绝，精神沉郁，全身症状急剧恶化，发生剧烈性呕吐和腹泻，呕吐物先为食糜，继为黄色或黄绿色泡沫黏液和血样物，泻粪有灰黄色的黏稠物，后转为恶臭的内含黏膜状稀粪，继而呈血痢，由于病犬剧烈呕吐和腹泻迅速脱水，眼球下陷，体温呈双向发热，病初40~41℃，1~2d降至正常，3~4d后又复升高，然后很快死亡，病程4~5d，临死时体温多下降至常温以下。2剖检病死犬胃底部有出血性炎症，呈深红色，小肠黏膜脱落，肠壁变薄，内有红色黏液，大肠内混有呈暗红色血液粪便，黏膜上有许多出血点，直肠黏膜出血较多，肠系膜淋巴结肿大，有时继发肠套叠，肠切面出血，心肌松软，颜色变淡，胆囊充盈，肝质脆而易碎。3诊断3.1流行病学诊断本病多发于幼犬，未免疫接种犬最易感，直接感染或间接感染，主要通过消化道感染，该病一年四季均可发生，但以寒。。。

The lithologic characters changed from fluviolacustrine sandstone to aeolian Red Clay with thin interval of greyish-white sand layers at the depth of 602 m. It can be inferred from the rock strata and age that the development age of aeolian sequence in Lanzhou area was 7 Ma at least, which is in accordance with the bottom age (7~8 Ma) of the aeolian sequence of the eastern and central Loess Plateau, suggesting that their accumulation processes are unitary.

皋兰山剖面深度602 m处出现由河湖相砂岩向以风成红粘土为主常夹有薄层砂岩的地层转变，通过岩性地层及年代的推断，兰州地区的风尘序列堆积发育的年代至少为7 Ma，与黄土高原风尘序列堆积底界8～7 Ma基本一致，说明了兰州地区与黄土高原在风尘序列堆积过程中具有统一性。

The metamorphic rocks of the area consist of granulite, plagioclase-gneis, biotite leptite and various kinds of schists of granulite to amphibolite facies By reconstruction, this metamorphic series is composed of three original formations which inciude five originai rock types: intermediate-acid volcanics formation at the bottom basic-felsic bimodae volcanits formation in the middle and basic-andesitic-felsic volcanics formation at the top...

区内太古代变质岩系广泛发育，其下部为深变质的麻粒岩相地层，上部为中深变质的角闪岩相地层，后者产出红透山式铜锌矿床多处，以及张胡子沟铜矿床和大荒沟硫铁矿床等一系列块状硫化物矿床(图1)。矿石中铅同位素年令为25～26亿年，在形成时代上可以和鞍本地区鞍山群对比。

In the garden extremely beautiful, wood light green, the flower blooms, they are eating at the same time, drinking brought thing, enjoying the scent of fresh air and ooze person the bottom of one's heart at the same time, play very racily.

花园里美极了，草木葱绿，鲜花盛开，他们一边吃着、喝着带来的东西，一边享受着清新的空气和沁人肺腑的芳香，玩得

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。