查询词典 convection

The printed circuit assembly is IR or convection reflowed at a temperature between approximately 280 and 290 degrees C, and maintains solder connection integrity when the printed circuit assembly (36) is later incorporated into a second printed circuit assembly using a standard tin-lead solder system.

该印刷电路组件在约280―290℃的温度下通过IR或对流加热而发生回流，并且当该印刷电路组件（36）随后通过标准的锡―铅焊料系被安装至第二印刷电路板时维持焊料连接整体性。

The conditions in a protostar resemble far more closely in situation in red giants, most of whose volume is caught up in stormy convection.

原恒星的条件更加类似于红巨星的情形，红巨星体积的大部分都卷入剧烈的对流中。

The radiative properties of syngas mixture were calculated by weighted-sum-of-gray-gases model. The Ranz- Marshall correlation for Nusselt number was used to account for convection heat transfer between gas phase and particles. The discrete ordinates model was used for modeling of the radiative heat transfer, and the effect of ash/slag particles on radiative heat transfer was considered.

温度场计算肘基于灰气体加权和模型与离散坐标法相结合的方法求解热辐射方程，同时考虑了煤渣颗粒的热辐射和散射影响，利用Ranz-Marshall关系式计算气固相间对流换热作用。

Thus for a pulse tube cooler working on the ground or near the ground, the effect of the natural convection should fully taken into account in the design,.

当脉管的倾斜角在范围内时，所计算脉管内的自然对流散热量可高达4W~8W ，这显然会严重影响脉管制冷机的性能。

The temperature distribution within the droplet is obtained from a solution of Laplace's equation, where quasi - steadiness and neglect of convection terms in the heat equation can be justified for small, slowly evaporating droplets.

水滴的温度分析可有拉普拉斯方程得到，其稳定性与忽视在热平衡中的对流条件被证明正在蒸发的水滴微小且缓慢的变化。

In the third type, the double-ring cloud wall is formed as a result of the development of cumulus convection inner region of typhoon into a well-closed inner cloud wall. The inner wall usually lasts for a period of time and then rapidly disappears.

还有一类双环云墙的形成是由台风眼内积云对流发展而演变为环状闭合内云墙的，这类台风的内云墙维持一段时间后即消散。

Air gap due to incomplete closure in the state, slow convection can reduce the heat inside the pot and set the energy loss of working hours.

因空气隙处于不完全封闭状态，对流缓慢，可减少发热盘和内锅工作时的能量散失。

Three-phase embed electrode salt bath furnace use the salt class as heating impregnant, according to the different operating temperature, could select different ingredient salt or compound salt, the salt is not electric beforemelting, therefore the salt bath furnace must use the starting-electrode to melt when using, because the electricity bring quantity of heat unceasingly through electric dissolving salt, so can maintain the dissolving state, because of electrode under the electromagnetic effect,make the dissolving saltcycle unceasingly through natural convection and magnetism mix round,therefore can well-proportioned heat workpiece rapidly.

三项埋入式电极盐浴炉采用盐类作加热剂，根据不同的工作温度，可选用不同成份的盐或混合盐，盐在熔化前是不导电的，因此盐浴炉使用时必须使用起动电极溶化，由于电流通过导电的溶盐不断产生热量，故可保持溶化状态，因电极在电磁力的作用下，通过自然对流和电磁搅拌而使熔盐不断循环，故可迅速和均匀的加热工件。

The convection-dispersion equation with the retardation coefficient yield by method has been adopted to model NH4--N transport in saturated soil, simulation results are compared well with experimental results.

基于批平衡得到NH_4~+—N的吸附延迟系数，利用对流一弥散方程模拟NH_4~+—N在饱和土壤中的迁移过程，模拟结果与试验结果吻合较好。

This article mainly carries on the analysis with new weather radar data characteristic in this rainfall process. With the analysis of the reflection factor, the wind profile and the rainfall estimation, we know that the strong wind vertical change and sufficient water vapor condition have the extremely vital role to the development and the maintenance of the convection storm; The new weather radar has the very good instruction function to the weather forecast, specially at the rainfall estimated and in the catastrophe weather forecast and the short-time forecast.

本文主要对这次降水过程中的新一代天气雷达资料特征进行分析，通过对反射率因子、风廓线和降水估测等主要产品的分析，表明较强的风的垂直切变、充足的水汽条件对对流风暴的发展和维持有非常重要的作用；新一代天气雷达对气象预报工作有很好的指导作用，特别在降水估计、灾害性天气预报和短时临近预报中有非常重要的意义。

Vishnu entered a dark fourth dimensional dream that did not support his field or continued life.

毗瑟挐进入了一个第四密度的黑暗梦想，那里并不支持他的能量场或继续生命。

Leaders and decision-making persons use it to collect the data, including the information of unit work, handing in fee, oweing fee, prepaying fee,changing and afterpaying and account transfering of joining-insurance employee, and account paying of all kinds of insurances from hospitalization insurance institutions.The collected data is picked up, organized, switched and showed to user.

该子系统主要面向各级领导、决策分析人员；从各个医疗保险经办机构和定点医疗机构采集数据，包括在各个医疗保险经办机构处理的单位办公信息，单位缴费、欠费、预缴费信息，参保职工变更信息，参保职工增减变动信息，参保职工补缴信息，参保职工帐户划拨信息：包括各定点医疗机构处理的各险种帐户支出信息，各险种的统筹金支付信息等；将采集的数据提取，组织和转换，然后展示给用户。