在缺乏水分时,植物一般用蒸发作为降温的手段。
When it is short of water, a plant normally USES evaporation as a means of cooling.
在缺乏水分时,(植物)一般用蒸发作为降温的手段。一株植物无法消除它从阳光中所吸收的热量,或是无法消除它在新陈代谢过程中积累起来的热量。
When it is short of water, a plant, which normally USES evaporation as a means of cooling, cannot rid itself of the heat it absorbs from sunlight or the heat that may build up from its own metabolism.
亚特兰大乔治亚技术研究院的斯瑞尼瓦斯·盖瑞·麦拉正在开发用外部热源把氨从溶液中蒸发出来的系统。
Srinivas Garimella at the Georgia Institute of Technology in Atlanta is developing a system in which external heat is used to boil off ammonia vapour from a solution.
本窗口显示的是减压蒸发器的出口压力,其作用主要是维修和调整用。
Gas pressure: this window display exit pressure of reducer its function is maintain and adjustment.
可光调的贴片电容由多层的金属电容组成,用激光蒸发掉顶层的材料而减少电级面积从而使减少电容的容量。
Trimmable chip capacitors are build up as multilayer plate capacitors. Vaporizing the top layer with a laser decreases the capacitance by reducing the area of the top electrode.
另外,浴用香皂的水分含量较赢30%左右,经过一段时间后水分就会蒸发,出现裂纹断裂。
In addition, the moisture content of bath soap compared with 30% win, after a period of time the water will evaporate, cracks fracture.
他们也学会了用薄膜盖住土地,这样可以最大程度地防止水分的蒸发,以达到保持住弥足珍贵的地表水的目的。
They have also learned how to better preserved the precious surface water by using the thin film to cover the soil so that the evaporation of the moisture from the ground can be minimized.
本文用气相色谱测定了多种烷烃、芳烃、醇类和酯类的蒸发热。
The heat of evaporation for various kinds of alkanes, alcohols, esters and aromatics were determined by gas chromatography.
本文用统计热力学方法导得了液体饱和蒸气压与蒸发热间的关系式。
A relation between the saturated vapor pressure and the heat of vaporization for pure liquids has been derived by statistical thermodynamic method.
描述单效蒸发器的方程,用下述方法推导。
The equations describing a single-effect evaporator are developed in the following manner.
本文研究了用远红外蒸发技术处理中放废液的工艺条件及影响因素。
The far infrared evaporation technology for treatment of lower-middle level radioactive waste liquid was investigated.
以大豆卵磷脂为包封材料,用反相蒸发法制备脂质体,同时用不同浓度的聚乙烯醇(PVA)进行包覆。
The liposome was made by reverse-phase evaporation method from soya lecithin and coated with different concentration of polyvinyl alcohol (PVA).
用俄歇谱及分子束技术就地与非就地研究了蒸发稀土金属镧薄膜的表面特性。
The surface characteristics of evaporated rare-earth metal la thin film were studied by ex-situ and in-situ AES and molecular beam technique.
总结了各种换热器性能评价方法,讨论了间接蒸发冷却换热器的(火用)效率分析计算方法。
Evaluation methods for heat exchanger are discussed, especially for indirect evaporative air cooler. The calculation methods of exergy effectiveness and exergy efficiency ratio are researched.
用压差调节阀形成的压差克服蒸发器内制冷剂的流动阻力,把低压液体制冷剂超量供入蒸发器。
Using the pressure difference formed by pressure difference regulating valve, overcome flow resistance of refrigerant in evaporater, supply excess low pressure liquid refrigerant for evaporater.
用西北地区140个气象站1971~2000年的春季降水、蒸发资料,计算了一种K干旱指数,并制定了干旱标准,分析了西北春季干旱的气候特征。
A kind of K drought index and its criterion are made by using spring precipitation and evaporation data of 140 stations in Northwest China from 1971-2000.
吸附钼后的吸附剂用氨水反洗,得到的钼酸铵溶液,通过蒸发、浓缩、中和结晶出仲钼酸铵,从而回收其中的钼。
After the solution of ammonium molybdate is neutralized by vaporizing and thickening, the secondary ammonium molybdate is crystallized, and the molybdenum from it is retrieved.
用盐酸加缓蚀剂来清除扩容蒸发烧碱回收装置中的碱垢,是一种简单易行的方法。
Using chlorhydric acid and inhibitor is a simple and easy way to clear the basic dirt in flash evaporation recovery package.
对用渗透蒸发膜分离方法去除C5中的甲醇进行了研究。
The methods of expunging methanol from C5 with pervaporation membranes were studied in this paper.
用蒸发和分解的时滞来分析燃烧不稳定性。
And the time lag of evaporation and decomposition has been utilized to analyze the combustion instability.
提出了一种用真空蒸发和真空热压相结合的技术来制备优质有机光学薄膜的方法。
A novel method has been developed for the growth of organic thin films, by vacuum deposition combined with vacuum hot press method.
用热蒸发和磁控溅射的物理镀膜方法和溶胶凝胶化学涂布的方法相结合制备了有机和无机复合纳米光学变色薄膜。
Physical method, including thermal evaporation and magnetic sputtering, and chemical coating method are applied to prepare organic-inorganic composite chromotropic film.
本文介绍一种用流态化技术与喷雾干燥相结合的方法将苯甲酸钠溶液在流化床内完成蒸发、干燥与造粒。
In this paper a fluidization technique and a spray drying method were presented that may combine evaporation, drying, and granulation of sodium benzoate solution in a fluidized bed all at once.
用TEM、XRD等方法研究了蒸发法制备的纳米铜粒子真空烧结后粒子尺寸及晶相的变化。
TEM, XRD were used to study the changes on particle size and crystal phase of nanometer copper after sintering in vacuum.
本文针对内陆干旱区平原水库水面无效蒸发量大的问题,提出用苯板漂浮水面的工程措施来防止蒸发损失,从而达到平原水库节水的目的。
The aim of the experiment is to reduce the large amount of ineffective evaporation in inland arid area plain reservoirs by using polystyrene foam plastic slabs floating on the water surface.
用板式降膜蒸发器蒸发浓缩酒精废液的方法;经生产实践证明,已取得初步成功。
The method that alcohol waste is concentrated in falling film plate evaporator, is proved to be successful in practice.
还报道用直流及交流方法研究此类蒸发膜光电导的一系列结果。
Results of the photoconductivities measured by DC and AC methods have also been reported.
用蒸发凝聚法制备的金属超微粉末的晶体结构与大块材料的晶体结构基本一致,氧化物含量少。
Under the experiment conditions, the crystal structure of the as-prepared ultra-fine metallic powders is almost the same as that of the bulk metal without obvious oxidation.
用蒸发凝聚法制备的金属超微粉末的晶体结构与大块材料的晶体结构基本一致,氧化物含量少。
Under the experiment conditions, the crystal structure of the as-prepared ultra-fine metallic powders is almost the same as that of the bulk metal without obvious oxidation.
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