冷却

In the research on flow and heat transfer of the diesel engine cooling system, the boundary condition is often difficult to be determined.

在研究柴油机冷却系统的流动和传热问题时，边界条件的确定往往成为难点。

3 Of the energy released from the burning gas is converted to heat that goes into the engine's cooling system.

从燃烧的气体释放的能量的1/3变为加热那去发动机的冷却系统。

A series of heat and mass exchange equations are established to study the cooling performance of cooling towers.

为了研究冷却塔的冷却特性，首先根据热湿交换的理论建立了热湿交换的相关方程，并据此计算了在不同条件下在逆流式冷却塔内单个下落的水滴与周围空气所进行的热湿交换的效果，并对计算结果逐项进行了分析。

It is desirable to reduce heat loss of diesel engines, and in the meantime it is also possible from their compression ignition working principle.

减少柴油机的冷却散热损失，是很有必要的，而且从柴油机的工作特征来看，也是允许的。

Optimization design and numerical simulation of microchannels heat sink are then studied.

分析了高热流密度芯片的冷却要求，对微槽道热沉的优化设计和数值模拟进行了研究。

Cooling, however, is defined as a heat transfer unit operation used for the removal of heat.

冷却，然而，是指为传热单元操作用于去除热。

The heat pump is the central unit that becomes the heating and cooling plant for the building.

热泵是中央单位，成为加热和冷却装置的建设。

If you are too heated, it will cool you

如果你太热了，它反而会使你冷却

For reactor, the point reactor kinetics equation with six-group delayed neutrons is used and influence of coolant's and fuel's temperature is considered, conduction model of one dimension and single-channel model is used in thermal and hydraulic calculation, third-order Hermite polynomial is used to solve the point reactor kinetics equation.

对于反应堆，在物理计算中采用了带有六组缓发中子的点堆方程，同时考虑了多普勒效应及冷却剂温度效应对反应性的影响；在热工水力计算中采用了一维的热传导模型与单通道模型；在求解点堆方程中采用了Hermite插值的方法，克服了点堆方程的刚性问题。

Combined with the new process and new products, we have developed their characteristic equations and models, especially for hollow; heteromorphism and composite fibers.

结合新工艺和新产品的开发，本文推导了高速纺丝、热管纺丝、热辊纺丝等工艺的特征单元方程及中空、异形、复合纺丝等新品种的特征单元方程，着重推导了圆形纤维、中空纤维、三叶异形纤维、皮芯复合纺丝的分层结构模型及分块模型，并对高速纺丝及中空纤维的不对称冷却结构进行了系统的数学模拟。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。