查询词典 vacuum bulb

Second the characteristicsSingle-stage single suction in-line centrifugal pump of Roots vacuum pumps: comparison with other oil seal vacuum pumps have the following characteristics: 1 in a wide pressure range with a large pumping speed; 2 the rotor has a good geometric symmetry it is vibration smooth operation.

二、罗茨真空泵的特点：与其它油封式真空泵相比有以下特点： 1、在较宽的压力范围内有较大的抽速； 2、转子具有良好的几何对称性，故振动小，运转平稳。

Although it is possible that new attempts to estimate the vacuum energy density may yield just the right amount to explain cosmic acceleration, many theorists believe that a correct calculation, incorporating a new symmetry principle, will lead to the conclusion that the energy associated with the quantum vacuum is zero.

虽然新的估算有可能得到能解释加速膨胀现象的真空能量密度，但多数科学家相信，经过正确的计算再配上新的对称性原理，得到的量子真空能量将会是零。

Electron tube, thermionic tube , thermionic vacuum tube , thermionic valve , tube , vacuum tube

联机查询中。。。联机词库无快速预览，请回车确定查询电真空器件，电子管

HydroVac vacuum pumps cover a wide range of applications from 10 to 280 ACFM at vacuum to 29 inches of mercury (25 Torr).

HydroVac真空泵有广泛的应用范围，在29英寸的汞柱（25托）压强下流量从10-280立方英尺/分。

The first artificial vacuum had been produced a few years earlier by Evangelista Torricelli, and had inspired von Guericke to design the world's first vacuum pump, which consisted of a piston and cylinder with one-way flap valves.

人工的真空几年前就由伊凡杰利斯塔。托里拆利创造出来，这一直启发冯。格里克发明世界上第一个真空泵，它由活塞和汽缸组成，并带有单向片状阀。

It can be combined with rotary devaporizer, vacuum freezing and drying box, water circulating multipurpose vacuum pump, magnetic treater and other instruments to conduct multipurpose low-temperature chemical reaction operations and drug storage.

结合旋转蒸发器、真空冷冻干燥箱、循环水式多用真空泵，磁力搅拌器等仪器，进行多功能低温下的化学反应作业及药物储存。

It can be combined with rotary devaporizer ,vacuum freezing and drying box,water circunlating multipurpose vacuum pump,magnetic treater and other instruments to conduct multipurpose low-temperature chemical reaction operations and drug storage.

结合旋转蒸发器，真空冷冻干燥箱、循环水式真空泵，磁力搅拌器等仪器，进行多功能低温下的化学反应作业及药物储存。

It elaborates the principle of the Vacuum Freezy-desiccation Technology by the triphase equilibrium plot and the triple point sketch map of the water.It analyses the characteristics of each stage in the process of the Vacuum Freezy-desiccation Technology.It illustrates the main contents,the important parameters and some remarkable things in each stage.At last it puts forward some tho...

通过水的相平衡图及三相点示意图，阐述了真空冷冻干燥技术的原理；分析了真空冷冻干燥过程中各阶段的特点，介绍了每一阶段的主要内容、重要参数的测定和一些注意事项，最后提出了一些关于真空冷冻干燥设备节能方面的想法。

It is found that amplitude-squared squeezing can be created by 4-photon unitary operator S4 acting on the vacuum state and this shows that the amplitude-squared squeezing can be created by 4-photon unitary operator S4 acting on the vacuum state and this shows that the amplitude-squared squeezing is a new nonclassical effect of light field which is independent of the second order squeezing, antibunching and sub-poisson statistics.

发现4个光子么正算符S4对真空态的作用可以产生振幅平方压缩，这表明振幅平方压缩是一种独立于二阶压缩、反聚束以及亚泊松统计分布的新的光场非经典效应。标签 K光子么正算符相干态真空态振幅平方压缩 K-photon unitary operator coherent state vacuum state amplitudesquared squeezing

From our result, we can see that unphysical components of the gauge fields are contributive to the vacuum energy and it just cancel out ghost fields contribution to the vacuum energy.

从计算结果来看，规范场的物理分量和非物理分量对真空的零点能都有贡献，而规范场的非物理分量对真空能量的贡献，不仅不包含M-C-S规范场的质量项，而且恰好与鬼场的贡献相抵消。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"