查询词典 vacuum

The evaluation showed that this oil is better than the present vacuum pump oil in oil- water separativeness, oxidation stability, antirust and antifoaming properties, is suitable for lubricating machanismwhich steam is easy to get into its vacuum system.

用特定的原料油及工艺制成基础油，并添加评选出的粘度指数改进剂、抗乳化剂、抗氧化剂、防锈剂和减摩剂等凋合成耐水真空泵油。

VS-600 external –pump vacuum machine Uses Japan and Korea leading technology collection vacuum,Seal and Gasifies the many kinds of functions, The seal uses the barometrical pressure type, Thorough change tradition packing seal not firm phenomenon.

vs-600 外抽式真空包装机采用日韩领先技术集真空，封口，充气多种功能于一体，封口采用气压式，彻底改变传统包装封口不牢的现象。

Stannous caprylate was selected as the catalyst. Under certain vacuum, we investigate the relation of both the dose of catalyst, the temperature of reaction, the time of reaction and the molecular weight of the PLA.Furthermore we investigate how the purity of lactide and the circumstance of vacuum affect the molecular weight of the PLA.

实验中选用辛酸亚锡Sn(oct_2为催化剂，在一定的真空度下考察了催化剂用量、反应温度、反应时间与聚乳酸分子量的关系；并考察了丙交酯纯度及真空度对聚乳酸分子量的影响。

Non-frying crisp chip of chaenomeles were processed by vacuum infusing and vacuum dehydrating at lower temperature , the products keep its original color, taste and high Vc content, the products is bright-color, plump slice and harmonious sweet and acid, rich in chaenomeles flavor.

应用真空糖渍和真空低温干燥技术对新鲜木瓜进行加工，研制具有天然水果色、香、味的无油木瓜脆片。

The series H·2H·H3 rotary piston vacuum pump is a sort of vacuum pro-duction equipment suitable for pumping ordinary gase and condensable gases.

H·2H·H3型系列滑阀式机械真空泵是抽除一般性气体或含有少量可凝性气体的真空获得设备之一。

This paper introduces the structure,the principle,the performamce and the select way of vacuum ejetors,By two practical examples show that the advantages of application of vacuum ejector is used in the packaging machiner

本文介绍了真空发生器的结构原理、工作特性和选用方法，并通过两个实例说明真空发生器在包装机械中应用的优越性。

It is shown that the meltable polyimide not only has excellent heat-resisting properties, but also has good vacuum properties. Therefore it can be used in vacuum as a high temperature adhensive.

通过分析比较可以看出可熔性聚酰亚胺不仅具有优良的耐高温特性，而且还具有良好的真空性能，因此，它完全可能作为真空中使用的耐高温胶粘剂材料。

Effect of de-astringent and crispness-keeping on Mopan persimmon of vacuum packing ;2. The paper introduces the method for preserving the fresh rare birds eggs using ozone sterilization and vacuum packing ,and describes the optimum technological process and parameters after a comprehensive analysis and study of the egg's weight-reduced rate,egg white index,and yolk index and it's pH value,i.

采用臭氧杀菌真空包装的方法进行乌鸡蛋的保鲜，综合鸡蛋减重率、蛋白指数、蛋黄指数和蛋黄pH值四项指数进行分析和研究，确定采用此工艺的最佳工艺流程和参数：过氧乙酸溶液预杀菌浓度为0 5%，臭氧杀菌3min，选用Ny/PE复合袋在真空度600mmHg下进行真空包装，保鲜期为7个月，好蛋率95%以上。

The veracity of the simulation results is validated by experiments and the effect of the size of capillary hole on vacuum degree is analyzed. The parametrical modeling, simulation, and optimization design of vacuum package process of MEMS devices are realized.

通过实验初步验证了模拟结果的准确性，分析了毛细孔尺寸对腔体和烘箱真空度的影响，实现了MEMS器件真空封装工艺的参数化建模与模拟和仿真优化设计。

In bud stage of mustards ecotype Xuelihong and Yuanyejie were transformed with in planta vacuum infiltration by an Agrobacterium tumefaciens strain GV3101 carrying hy-gromycin resistance gene. Effects of different factors on transformation frequency with in planta vacuum infiltration were studied.

以蕾期的芥菜生态型雪里蕻和圆叶芥为试材，在携带潮霉素磷酸转移酶标记基因的根癌农杆菌菌株GV3101的介导下，对影响芥菜植株原位真空渗入遗传转化效果的真空渗入时间、根癌农杆菌悬浮孢子的浓度、渗入培养基、感染方式以及根癌农杆菌菌株等进行研究。

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