vacuum well

The extended interaction device is a major category of millimeter-wave electronic vacuum tube. The study found that the extended interaction oscillator ( EIO) is well suited to work in the millimeter wave band, and now becomes one important type of High power millimeter-wave devices.

扩展互作用器件是一类重要的毫米波电真空器件，经研究发现扩展互作用振荡器（EIO）十分适合工作在毫米波波段，目前已经发展成为一类重要的大功率毫米波器件。

The process is emphatically introduced about using the low-lift and large-flow pumps as the water charging pumps of the barometric condensers, as well as the technic improvement measures by discharging incondensable gas through by-pass pipes during normal running without operating ejector vacuum pumps.

重点介绍了大气冷凝器的上水泵使用低扬程、大流量泵的工艺，以及正常开车时，在不开启喷射泵的情况下，通过旁路管可以排出不凝气等技改措施。

Transfer lines for liquid helium should be well insulated and vacuum jacketed.

用于液氦的转移管应该隔热良好和带有真空夹层.

The outlet pressure of all those pumps were not lower than 0.1 Torr, and it follows that those pumps can run well by using directly the mechanical vacuum pumps as backing pumps without booster pump used.

所有这些泵的最大出口压力不低于0.1Torr，因此前级泵可直接用机械真空泵，不必用增压泵即能正常工作。

Vacuum gas nitriding ( VGN) technology was adopted and evaluated for well casing to against the corrosion in Changqing oilfield.

针对长庆油田油井套管腐蚀问题，采用并评价了真空渗氮工艺。

This paper presents the processes of full coal gangue sintered porous brick, such as grinding of raw materials, plasticizing, hard plastic extruding, palletizing and burning as well as characteristics of the domestic double stages vacuum hard plastic extruder in details.

对全煤矸石烧结多孔砖原料的粉磨、增塑、硬塑成型、码坯、烧成等过程及国产双级真空硬塑挤砖机的特性作了详细的介绍。