查询词典 heat-unit

SnPb eutectic solder reflow on BGA pad metallized with Au/Ni to form solder bump with induction self excite heat under alternate electromagnetic radiation is performed, and impacts of induction self excite heat and solid state aging on interfacial reaction between SnPb eutectic solder and Au/Ni metallization are investigated.

进行了交变电磁辐射下附Au/Ni镀层BGA焊盘上SnPb共晶钎料球感应自发热重熔形成钎料凸台的实验，并分析了感应自发热重熔以及固态老化对SnPb共晶钎料与Au/Ni镀层焊盘界面反应的影响。

Avoiding the complex and precise discussion,this article,for a type of elemental heat equation,is going to give a convenient method of solving heat equation by separation of variables and to expand the range of solvable problems with the help of Fourier series.

本文避开微分方程定性理论的复杂、严谨讨论，想就一类最基本的热传导方程，通过分离变量的方法将偏微分方程的边值问题转化为常微分方程的边值问题，给出一种较简捷的定解模式，并利用Fourier级数，将解题范围加以推广。

Borrows by the heat conduction, the heat energy even branch in skin each spot, can enable the meticulous skin organization blood circulation to achieve ordinary sextuple, the dermis blood current capacity may promote the blood vessel activity, the activation, nourishes the flesh, may relax minus sympathetic nerve achieves the calm skin, relaxes the nerve function.

藉由热传导，将热能均匀分部在皮肤的每个部位，能使细致的皮肤组织血液循环达到普通的六倍，真皮的血液流量会增加可促进血管活动性，活化、滋养肌肤，可舒缓副交感神经己达镇静皮肤、放松神经功能。

In the deformation analysis, equilibrium hyperelastic constitutive equations which are obtained by our experiments are applied; In the dissipation energy analysis, dissipation energy is calculated by combining the stress-strain distributions derived from the deformation analysis and viscous dissipation characters; In the heat transfer analysis, combining temperature on tire side tested by drum test, a numerical inverse method is described for determining the heat convection boundary on tire side.

变形分析中，采用了平衡态的超弹性材料模型；损耗分析中，依据变形分析获得的应力应变场，结合材料粘性损耗特性来获得损耗能量；热传导分析中，依据实测的轮胎胎侧温度场，提出了一种基于实验的数值反演方法来确定胎侧的对流热边界条件。

Nine thermodynamic properties, combustion enthalpy, evaporation enthalpy, liquid enthalpy and heat capacity, vapor heat capacity, thermal conductivity, kinematic viscosity, density and vapor pressure, are predicted or correlated with satisfactory results by using a simple hypothesis of the groups for petroleum fractions.

简单的基团假设，可以定量地预测和关联石油馏分燃烧焓、汽化焓、液体焓与热容、汽体热容、热导率、运动粘度、密度和蒸气压等9种热力学性质，效果满意。

Establishment and Validity of the Ground Source Heat Pump System Model According to the column source theory and with the help of existing theoretical and experimental researches of the ground source heat pump, the simulat

CO2地源热泵的模拟研究结果表明，自然工质CO2应用于以土壤为热源的热泵系统时，完全可取得和R22地源热泵相接近的运行节能效果。

Establishment and Validity of the Ground Source Heat Pump System ModelAccording to the column source theory and with the help of existing theoretical and experimental researches of the ground source heat pump, the simulat

CO2地源热泵的模拟研究结果表明，自然工质CO2应用于以土壤为热源的热泵系统时，完全可取得和R22地源热泵相接近的运行节能效果。

China is carrying out ten key energy-saving projects, including petroleum substitution, simultaneous generation of heat and power, surplus heat utilization and the construction of energy-saving buildings.

中国政府建立了政府强制采购节能产品制度，积极推进优先采购节能产品，选择部分节能效果显著、性能比较成熟的产品予以强制采购。

The establishment of heat environment depends on the heat transferring situation of the room.

而热环境的建立主要取决于房间内的换热状况。

Meanwhile, heat the olive oil in a skillet over medium heat.

同时，在煮锅中用中火加热橄榄油。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐