查询词典 vacuum

The design of adhesive joints of non-magnetic Dewar should base on the vacuum failure.

无磁杜瓦中粘接接头的设计应以真空失效为主要依据。

Fig. 1 illustrates a typical, vacuum- jacket ed dewar.

图1说明了一个典型的带有真空夹层的杜瓦瓶。

Fig. 2 illustrates a typical, vacuum-jacketed dewar.

图2说明了一个典型的带有真空夹层的杜瓦瓶。

The results show that the surface out-gassing is mainly responsible for the pressure increase, and that at 77K, the base pressure in the Dewar vacuum interlayer can be 5.0×10^(-4)Pa and maintained for a fairly long period of time.

研究结果表明：玻璃钢复合材料放气率是影响夹层真空度的主要因素；在液氮温度下杜瓦夹层动态真空度可达5×10^(-4)Pa，并可长期使用而真空度不变。

It will also reduce the length of the main hull to such a size so that on the diagonal of the vacuum form machine table I can limit the number of sections down to just top and bottom.

它也将缩短，主要的船体，以这样的规模，使对对角线上的真空，机械表的形式，我可以人数限制路段下降到刚才的顶部和底部。

The field emission of diamond film involves the electrons travel from the negative end of the power supply, through the various interfacial contacts, through the bulk of the film itself, to the film surface,then tunnel through the potential barrier ,propagate through the vacuum gap, before finally reaching the anode.

金刚石膜场致发射过程是电子从导电基底开始，经基底/金刚石界面、金刚石薄膜体内传输到表面，然后穿过表面势垒进入真空、经真空电场加速到达阳极的一个复杂过程。

Electrons can be easily injected from thegraphitic matrix into the conduction rand of diamond under the high field which resultedfrom the projection field enhancemext.These injected electrons could reach the vacuumsurface and then emit into vacuum where the negative electron affinity or low electronaffinity could allow the electrons to re emitted more easily.

由于场增强效应，对镶嵌在非晶碳颗粒表面的金刚石晶粒来说，电子在高场作用下通过隧道效应越过金刚石晶粒与非晶碳形成的界面势垒，注入金刚石的导带，在电场的作用下迁移到表面，由于某些金刚石表面具有负电子亲和势或较小的正电子亲和势，电子较易发射进入真空。

Output 70% of liquid water and 30% of crude oil, have to vacuum pressure through the diaphragm.

产出液中70%的水与30%的原油一样，要通过隔膜真空泵加压。

Throughout, the author makes excellent use of real-life examples and highly praised didactics to disseminate his expert knowledge needed by vacuum technology users and engineers in their daily work at industrial plants, as consultants or in design offices.

全部， 作者极好利用真正生活的例子并且非常称扬didactics 传播在他们的每日作业里真空技术用户和工程师需要的他的专家知识，工业植物，作为顾问或者在设计办公室。

Exercise 6 , To demonstrate permittivity in vacuum is actually a dimensionless physical constant.

习题6，试证明真空电导率实际上是一个无量纲的物理常数。

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％。