vacuum 四级GMAT考研

The Gibbs free energy and critical reduction temperature of vacuum silicothermic reduction producing metallic strontium were calculated and analyzed by thermodynamics.

摘 要: 采用热力学方法计算并分析空硅热法炼锶反应自由能和临界还原温度。

ZJ type Roots vacuum pump can't discharge gases directly into the air,it should be equipped with a cowesponding prepump at operation.

ZJ型罗茨空泵不能直排大气，运行时需配备相应前级泵。

His resignation has left a power vacuum at the head of the party.

他辞职使得该党领导位置出现了权力空。

He travels in vacuum cleaners.

他到各地推销吸尘。

I mean to buy a vacuum next month.

下个月我打算买一台空吸尘。

His wife's death left a vacuum in his life.

他妻子去世使他生活变得空虚。

He sells vacuum cleaners.

他经销空吸尘。

Together with the vacuum debubbling barrel, injecting and forming the debubbled mud with the air pressure in the vacuum debubbling barrel.

空脱泡桶配套使用，利用空脱泡桶中空气压力将脱泡好泥浆进行注浆成型。

Packing : Product subpackage in double-decked plastic bag, vacuum packing.

产品分装于双层塑料袋中，空包装。

Biotron, Inc manufactures a wide range of standard and configure-toorder laboratory, research and production-scale fermentation systems. freeze dryer, speed vacuum concentrator and centrifuges.

她生产一系列标准科研和工业化发酵设备、冷干机、浓缩仪和机，也可根据客户订单要求生产和开发非标准设备。

In a10kV distribution system,when shunt ca-pacitors are switched off by vacuum circuit breakers,restrike overvoltage often occurs.

电力系统中使用空断路切除无功补偿用并联电容时,容易产生重燃过电压,严重影响并联电容安全运行。

To the following surface treatment: sand blasting, oxidation, corrosion, laser carving, wholesale, laser welding, polishing, lampworking, PVD vacuum electroplating, oil-filled fonts.

喷砂,氧化,腐蚀,镭雕,批发,激光焊接,抛光,拉丝,PVD空电镀,字体填油.

The effect of sulphuring, vacuum treatment and soaking on the quality of candied apples was studied.

本文研究了苹果脯生产中护色、抽空处理、浸渍等关键工序对产品质量影响。

A new method of processing candied jujube,except washing process and detaching nucleus process the three step are vacuum critical cryodrying,vacuum infusing sugar and vacuum dehydration in sequence.

一种加工蜜枣新方法,加工步骤除清洗、去核外依次为空临界低温干燥、浓缩式空浸糖和空烘干。

The main function of vacuum sucking sewage truck is to suck and transport the dejecta and sullage and carpolite and the other liquid mixing big suspend impurity for Environment Protection in city.

我公司生产空吸污车系列主要功能是为城乡环卫部门抽吸和运送粪便、淤泥、石子及其它混有较大悬浮杂物液体。

The process of vacuum electron beam welding for rear-axle housing semiaxle of coach was introduced and the major problems in the process of welding was analysed.

介绍了用空电子束焊接大型客车后桥壳半轴工艺方法,并就焊接过程中存在主要问题进行了分析。

Further mose, by installing vacuum pump on scutcher, hydration of time with fabric expanding.

此外，通过在打棉机上安装空泵，织物水合作用时间得以延长。

This article discussed the optimization of vacuum freeze-drying and succade process of flammulina velutipes .

讨论了新鲜金针菇不同预处理方法及其空冷冻干燥和蜜饯加工条件优化。

The vacuum cleaner has four different attachments.

吸尘有四个不同附件。

I went down on one knee to plug in the vacuum cleaner.

我单腿跪下插上吸尘插头。