查询词典 cooling

A method for making Bisphenol A with a purity of more than 99.7% by reacting phenol and acetone using an acid catalyst, separating a BPA-phenol adduct by crystallisation and removing phenol from the adduct, in which involves continuous suspension crystallisation with a total dwell time of more than 4 hours in at least 3 crystallisers, by cooling first to 50-70 C in two parallel crystallisers and then to 40-50 C in a third crystalliser connected in series with the first two.; A method for the production of Bisphenol A with a purity of more than 99.7%, by reacting phenol with acetone in presence of an acid catalyst, separating a BPA-phenol adduct from the product mixture by crystallisation, filtration and washing, and removing the phenol from the adduct, in which stage involves continuous suspension crystallisation in at least three crystallisers connected in such a way that the mixture is first cooled to 50-70 C in two crystallisers in parallel and then cooled to 40-50 C in a third crystalliser in series with the first two, the total residence time of the mixture over all crystallisers being more than 4 hours.

描述用于生产纯度大于99.7％的双酚例如，双酚A(BPA的方法，这种方法包含苯酚和丙酮在有酸性催化剂参与的情况下反应形成一个包含双酚的产物混合物；通过结晶、过滤和洗涤从该产物混合物中以双酚/苯酚复合物的形式除去至少一部分双酚以提供双酚A/苯酚复合物晶体；并且从双酚/苯酚复合物晶体中除去至少一部分的苯酚以提供纯度大于99.7％的双酚；其中结晶过程包括连续的混悬液结晶，并且是在至少三个结晶装置中进行的，装置的排列使得产物混合物首先在结晶过程的第一阶段在第一个结晶装置和并联的第二个结晶装置中被冷却到50至70℃的温度，随后在结晶过程的第二阶段在与第一和第二个结晶装置下游串联的第三个结晶装置中被冷却到40至50℃的温度，并且其中产物混合物在结晶过程中的总驻留时间在4小时以上。

The cooling airflow discharges from the top of the package facilitating easy ducting for removal and/or recovery of exhaust heat.

冷却后的气体从机组的顶部排出，使得热回收和再利用容易实现。

This method is typically used in high heat flux regions and in combination with regenerative cooling.

这个方法通常使用在高热流地区和在结合再生冷却。

For regenerative cooling, it is important that the material have high strength at elevated temperatures and, also, have a high thermal conductivity.

为再生冷却，这是非常重要的材料有高强度在高温下和，也有很高的热导率。

Regenerative cooling technology is one of the key technologies to thermally protect scramjet chamber.

摘要再生冷却技术是超燃冲压发动机燃烧室热防护的关键技术。

Liquid oxygen/methane engine has higher performance and methane has good regenerative cooling performance, so it is a preferred alternative propellant combination .

液氧/甲烷发动机具有较高的性能，甲烷有好的再生冷却性能，是一个可供选择的推进剂组合。

Then using this method, influence of gas wall material, gas wall thickness and flow rate of coolant on regenerative cooling of thrust chamber was investigaed. The results were satisfactory.

然后使用这种方法研究了气壁材料、气壁厚度和冷却液流量对推力室再生冷却的影响，获得了比较满意的结果。

The two-dimensional physical mathematical model on the heat transfer of regenerative cooling of liquid rocket platelet thrust chamber was derived.

考虑了冷却剂和层板材料热物性的变化，并对室壁厚度、高宽比和物性变化等诸多影响因素进行了参数研究。

In order to understand the heat transfer characteristics of regenerative cooling in two dimensional plug nozzle, a computational model was established and numerical simulation was carried out. The flowfield and the heat transfer characteristics of plug nozzle at different ambient pressures were investigated.

为了解塞式喷管再生冷却的换热特性，建立了二维型面塞式喷管计算模型，采用数值模拟的方法，研究了不同工况下塞式喷管的流场和换热特性。

To understand heat transfer characteristics of regenerative cooling in liquid propellant rocket nozzle, numerical simulation was employed. Three dimensional governing equations for hot gas, solid wall and coolant were established respectively, and coupled calculation of flow and heat transfer was carried out.

为了解液体火箭发动机喷管再生冷却的换热特点，采用数值模拟的方法，对内喷管燃气、壁面和冷却液建立不同的三维控制方程，进行流动和传热的耦合计算。

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