查询词典 cooling by evaporation

Aimed at the large deformation problem of industry cooling tower shell, the mathematical model for the random response of rotational shell under the external random excitation is established by statistic perturbation method.

针对工业冷却塔结构大变形的随机动力问题，利用统计摄动方法，考虑旋转壳法向几何非线性及随机激励作用，建立了旋转壳的非线性随机动力响应数学模型。

Heat treating of tool steels 工具钢的热处理 The purpose of heat treatment is to control the properties of a metal or alloy through the alteration of the structure of the metal or alloy by heating it to definite temperatures and cooling at various rates.

热处理的目的是通过把金属或合金加热到预定的温度并以不同的速率冷却，来改变金属或合金的结构，从而控制它们的性质。

Applicable to a wide range of precision machine tool technology of ultra-fine grinding and light load, such as metal grinding process of the lubrication and cooling, is particularly applicable to the polishing blade art processing.

适用于多种精密机床的超细磨削工艺和轻负荷金属磨削等加工工艺的润滑和冷却，特别适用于美工刀片的抛光加工。

Changing temperature velocity in inner barrel is not a stable constant, and it will vary with advancement of measuring from time to time, thus cooling emendation quadrature model is established to compensate temperature dissipation.

通过引入牛顿冷却定律，较好的解释了热交换造成的量热系统温度变化，并就恒温式氧弹仪具体结构及实验条件分析了影响量热系统热量散失的因素。

The method comprises: adding 4-(3,4-dichlorophenyl)-1-tetralone and solvent at a ratio of 1:(3-4) into a three-necked flask with a stirrer, heating under stirring until 4-(3,4-dichlorophenyl)-1-tetralone is completely dissolved, heating to 60-100 deg.C, refluxing for 0.5-2 h, cooling the filtrate to -5-10 deg.C, filtering, recrystallizing to obtain refined 4-(3,4-dichlorophenyl)-1-tetralone, and drying at 40-80 deg.C to obtain dry 4-(3,4-dichlorophenyl)-1-tetralone.

该方法的步骤是：在带搅拌的三颈瓶中依次加入4-(3，4-二氯苯基)-1-萘满酮和溶剂，溶剂与4-(3，4-二氯苯基)-1-萘满酮的L∶W为3～4∶1，将上述4-(3，4-二氯苯基)-1-萘满酮及混合精制溶剂搅拌下升温，使4-(3，4-二氯苯基)-1-萘满酮全部溶解，升温至60～100℃，回流0.5-2h；滤液用冰水冷却至-5～10℃，过滤，所得物料再用上述方法进行一次重结晶得到精品4-(3，4-二氯苯基)-1-萘满酮，40～80℃干燥后即得到干品4-(3，4-二氯苯基)-1-萘满酮。

Thread steel bar,The use of complementary energy,Water cooling,Prospects for development

轧制过程的余能利用方式为轧后穿水冷却，它通过对轧件本身的热量有效利用，细化钢材组织和强化钢材的机械性能，以达到钢材综合性能的提高，这一技术在棒线材

The hot test of the copper cooling stave with circular channels was done in the test furnace designed by the authors.

在自行研制的热态试验炉上对圆孔型铜冷却壁进行了热模拟试验。

It is considered that pre-tension stress counteract the compression stress in welding zone generated by thermal expansion, consequently reduce the compression plastic deformation, and depress the tension stress in welding zone when cooling down, and accordingly minish the compression stresses far from the welding zone.

分析认为，预拉伸应力部分抵消了焊接区热膨胀产生的压缩应力，从而减小了压缩塑性变形，进而减小了冷却时焊接区域的拉伸应力水平，相应地远离焊缝区域的压缩应力也随之减小。

The tea ''.'drinker'.'' is then expected to add the tea bag to the rapidly cooling ''.'water'.

儿。然后，用茶者就要迅速地把茶叶放进很快就要变凉的''。

The performances of spark-ignition biogas engine were studied by using the biogas as the fuel, which was produced from the controllable thermal cracking of agricultural and forestry residues with the procedures of removing dust and tar as well as cooling.

利用农林废弃物可控热裂解产生的生物质气，经除尘、除焦油及冷却处理后作为火花点火生物质气发动机的燃料，对发动机的性能进行试验研究。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48