查询词典 precooling

The influences of precooling methods on the respiration intensity, formation of ethene and the quality of 'Fraiar' and 'Angeleno' plum fruit were investigated.

以'黑宝石'和'安哥诺'李果实为试验材料，研究了冰水和风预冷对李果实呼吸强度、乙烯生成量及其贮藏品质变化的影响。

So there is a need to study the key technologiesand processes in the vacuum precooling unit and to provide the theoretical basis forthe design and application of vacuum precooling unit.

因此，迫切需要对真空预冷装置中的关键技术和预冷工艺进行研究，为真空预冷装置的设计和使用提供理论依据。

The precooling operation of propylene jar at low temperature was studied in detail and the rational method of the precooling operation was advanced.

对低温丙烯罐的预冷工艺进行了较为仔细深入的研究，提出了较为科学、合理的预冷操作方法，确保了丙烯贮罐内罐基本维持每小时温降1℃。

Compared to ice precooling, water precooling and vacuum precooling,the advantages of pressure-difference precooling were introduced.

介绍了压差预冷技术相对于冰预冷、水预冷以及真空预冷的优点，综述了压差预冷技术在国内外的研究现状，同时指出目前压差预冷技术中存在的问题，预测今后的发展前景。

The paper analyses precooling process of LNG Carriers tank and brings forward mathematic models of precooling process and precooling theory rule.

本文对LNG船液货舱的预冷过程进行分析，提出预冷过程的数学模型，由此得出预冷理论规律。

Any preheating and precooling increases the chamber charging pressure before TDC, and this is mechanically counter- productive for the piston (gas chamber loading requires less mechanical energy in the absence of preheating and precooling, which makes the regenerator less effective than one may think).

任何预热和预冷室收费增加了贸发局的压力面前，这是机械计数器加载生产的活塞（气室需要一个可能觉得少的机械比能量的情况下预热和预冷，这使得再生效果较差）。

The results show that the precooling time of the probe is shortened significantly with the help of the vapor liquid separator, and decreases with the driven pressure. With the helical coiled wire and the helical mesh, significant thermal Oscillation corresponding the density-wave is observed in the precooling time. The average heat transfer coefficient enhances 1.5 times with the mentioned heat transfer enhancement techniques, and the temperature of the 2.5 min cryoprobe surface can reach -160℃ in 17℃ brine within 10 min.

结果表明：使用了快速预冷汽液分离器后，探针预冷时间大大缩短，并随驱动压力增大而减小；加入螺旋丝和螺旋丝网后，在预冷阶段出现明显的热力振荡，并伴有密度波振荡，平均换热系数为原来的1.5倍，在17℃生理盐水中10min时2.5min探针表面温度最低可达－160℃，大大提高了探针的冷却性能。

The dissertation presents somecontents about the vacuum precooling as follows: 1. Studies on the evaporation cooling principles of fruit and vegetable There are different optimal storing conditions for different vegetables and fruits.And the vegetable and fruit precooled by vacuum must be fit with the storingcondition. A low temperature will result in the frozen scald, and a high temperaturewill not meet the precooling objective.

本文开展了以下几个主要方面内容的研究：1、果蔬蒸发冷却规律的研究不同果蔬都有各自不同的最佳储藏条件，因此，真空冷却后的果蔬必须满足储藏要求，温度过低易引起果蔬冻伤，过高则达不到预冷的目的；湿度过低易引起干耗，减轻重量；过高则易引起腐烂变质。

The results showed that wind precooling could inhibit the respiration intensity of plum fruit, while the two precooling methods had little effect on the formation of ethene. The firmness and soluble solid content decreased on storage. The precooling methods had little effect on the firmness of fruit, but wind precooling could relieve the decrease of to a certian extent. The two varieties of plum fruit both became rotten in the late period of storage, the rot with ice precooling was higher than wind.

结果表明，风预冷可抑制'黑宝石'和'安哥诺'李果实的呼吸速率，但这2种预冷方式对果实乙烯释放量的影响不明显；随着贮藏时间的延长，'黑宝石'和'安哥诺'李果实的硬度和SSC含量均下降，这2种预冷方式汁果实硬度的影响不大，但风预冷可在一定程度上缓解果实SSC含量的下降；在贮藏后期，2品种李果实均表现出腐烂症状，冰水预冷果实的腐烂症状明显高于风预冷。

The results showed that wind precooling could inhibit the respiration intensity of plum fruit, while the two precooling methods had little effect on the formation of ethene. The firmness and soluble solid content decreased on storage. The precooling methods had little effect on the firmness of fruit, but wind precooling could relieve the decrease ofto a certian extent. The two varieties of plum fruit both became rotten in the late period of storage, the rot with ice precooling was higher than wind.

结果表明，风预冷可抑制'黑宝石'和'安哥诺'李果实的呼吸速率，但这2种预冷方式对果实乙烯释放量的影响不明显；随着贮藏时间的延长，'黑宝石'和'安哥诺'李果实的硬度和SSC含量均下降，这2种预冷方式对果实硬度的影响不大，但风预冷可在一定程度上缓解果实SSC含量的下降；在贮藏后期，2品种李果实均表现出腐烂症状，冰水预冷果实的腐烂症状明显高于风预冷。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。