查询词典 precooling

The engine of cryogenic liquid rocket is required for fully precooling by natural circulation before launching, and the return flow location of the circulation loop plays an important part in field distribution of tank.

低温液体火箭射前需要采用自然循环方式对火箭发动机进行充分预冷，循环预冷管路的回流口位置是影响液氧贮箱内部场分布的重要因素。

Subsidies targeted at new year 2008, expanding to fresh fruits and vegetables precooling Agrocybe business mainly fruits and vegetables in cold storage and processing-oriented large-scale pre-cooling refrigerator.

补贴对象是2008年度新建、扩建以瓜果菜预冷保鲜业务为主的田头冷库和以瓜果菜预冷处理为主的大型冷库。

METHODS: 15 g/L silk fibroin solution was made by degumming, salvation and dialysis. Chitosan was dissolved in 2% acetic acid solution to prepare 25 g/L chitosan-acetic acid solution. Two solutions were mixed to prepare six silk fibroin/chitosan solutions, and mass ratio was 10: 0, 5: 5, 4: 6, 3: 7, 2: 8, 0: 10. These solutions were separately sucked in a 24-well plate. Following exhausting gas vacuole at 4 ℃, precooling was performed at -20 ℃ for 12 hours, followed by cryodesiccate for 30 hours.

通过脱胶、溶解、透析这3个主要步骤制成质量浓度为15 g/L的丝素溶液，将壳聚糖溶解在2%的醋酸溶液中制成25 g/L的壳聚糖-乙酸溶液，然后将两者混合，配制成丝素/壳聚糖质量比分别为10∶0，5∶5，4∶6，3∶7，2∶8，0∶10的6种溶液，分别吸入24孔板中，4 ℃排出气泡后，-20 ℃预冷冻12 h，再冷冻干燥30 h。

The models and numerical method for the prediction of precooling and starting process of LOX/LH〓 rocket engine were systematically developed in this thesis with the emphasis on cryogenic thermodynamics and full range regime description.

本文以分级燃烧动力循环液氢液氧发动机的研制为背景，针对预冷与起动过程低温热流体动力学现象和大范围变工况特点，系统地研究了预冷与起动过程计算的模型与数值方法。

In the Stirling piston engine, the regenerator is a temporary heat storage aimed at increasing "thermal efficiency" with free-energy preheating and precooling.

在活塞的斯特林发动机，再生器是一个临时储热预冷旨在提高能源预热和&热效率&与自由。

A mathematical model ,with the heat of surface evaporation and respiration as interior heat resource,has been established to calculate the precooling time of spheral fruit by pressure-difference method.

通过将表面蒸发、呼吸热作为内热源加入到传热数学模型中，对单体球形果蔬压差预冷过程建立数学模型，并且简化边界条件，提出一种计算预冷所需时间的简便方法。

He has to relate with three women in the movie, and yet remain implicitly faithful to the unseen Lucinda.

让克劳德布里亚里成功地饰演试验了一个难度很大的角色：和三个女人打交道，但还要底下对观众未曾谋面的卢馨达保持忠诚。

The experiment was conducted to study effects of inulin on the growth performance, indices of immune organs and serum immunoglobulin of laying chicklings as well as the performance of inulin which replaced the antibiotics in diets by adding 0.2%, 0.4% and 0.8% of inulin, respectively.

试验旨在通过在蛋用雏鸡日粮中添加0.2%、0.4%和0.8%的菊粉，研究菊粉对蛋雏鸡生长性能、免疫器官指数和血清免疫球蛋白的影响，以及菊粉替代抗生素对蛋雏鸡的应用效果。