查询词典 vacuum

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。

Piping service include fire protection piping, chilled process piping,hot water pipings, steam piping, hot vacuum piping, cold vacuum piping.

管道工作包含消防管，冷凝水管，热水管，蒸汽管，热真空管，冷真空管，雨水管及城市水管。

A new processing technology is adopted for vacuum pressure impregnation of the OH coil. The coil after vacuum pressure impregnation has the same electrical and mechanical properties.

线圈的真空压力浸渍工艺采取一种新的技术，处理后的线圈有同样的机械强度和绝缘性能。

The key part of vacuum interrupters is vacuum tube, whose pressure is an important parameter.

随着配电系统&无油化&浪潮的兴起，近年来真空断路器以其特有的优越性在中压配电领域得到越来越广泛的应用。

Hence, studies on the measurement and the online detection technique of vacuum pressure within vacuum tube have important academic and practical meanings.

因而对真空灭弧室真空度在线检测的方法和系统进行研究具有重要的理论和现实意义。

In the vacuum tube radio, a lot of space is taken up by these vacuum tubes and a large quantity of beat is produced so that part of the electric ''.

电子管收音机中的很大空间就是被这些电子管占领着的，它们产生大量的热，因此部分电能被浪费掉了。

In the vacuum tube radio, a lot of space is taken up by these vacuum tubes and a large quantity of beat is produced so that part of the electric power is wasted.

电子管收音机中的很大空间就是被这些电子管占领着的，它们产生大量的热，因此部分电能被浪费掉了。

The reason of RH-KTB system performance declining is analyzed. Not only owing to entry temperature, pressure, flux of water vapor and condenser's bad effect, extraction ability of vacuum pump declines but also there are leaks in vacuum system result in system performance declining.

对系统性能下降的原因进行了分析，水蒸汽的人口温度、压力、流量的变动及冷凝器的冷凝效果不佳而导致的真空泵抽气能力下降以及系统泄漏是导致系统性能下降的主要原因。

Vacuum packaging machine: for food products such as vacuum-packed.

真空包装机：用于食品等产品的真空包装。

Can be imported in any work under pressure, has generally been applied to the vacuum-packed food, plastic industrial vacuum blister forming.

可以在任意入口压强下工作，已普遍应用于食品的真空包装，塑料工业的真空吸塑成形。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷