要避免这种活性气体从断裂的岩石逃逸重返大气层又该怎么办呢？
But what's to keep the buoyant gas from working its way up through fractured rock and reentering the atmosphere?
着重研究了焊接速度与活性气体对气孔形成的影响关系。
And study the influence of welding speed and active gas for welding porosity defect.
研究了源结构和引束上活性气体的影响，并获得有关结果。
The influences of source structure and reactive gases on delivered beams were investigated and the related results were achieved.
锆铝吸气泵是利用非蒸散型吸气剂吸附活性气体的一种新型真空设备。
Zirconium-aluminium getter pump is a new type of vacuum installation, in which the non-evaporable getter material is used to absorb the active gases.
这对于进一步分析大气透过率和反演大气中红外活性气体浓度具有实际意义。
This calibration method is of significance to the further analysis of atmospheric transmission and the retrieval of the concentration of infrared active gas in atmosphere.
而要研制高阻隔性封装材料，首先要解决如何测量水蒸气、氧气和其他活性气体对封装材料的渗透率的问题。
How to accurately measure permeation rates of water vapor and oxygen through packaging materials is very important for developing high quality barrier packaging materials.
用快速扫描傅立叶变换红外光谱，解析了分解过程中逸出的11种红外活性气体，给出了主要气相产物浓度随时间的变化曲线。
With the help of rapid scanning Fourier transform infrared FT-IR spectroscopy, 11 IR-active gas products were resolved during the flash pyrolysis process.
具有优秀的MAG（熔化极活性气体保护焊）焊接方法经验，能够针对不同材料使用不同焊接方法，熟悉FANUC焊接系统更佳；
Good experience of MAG can use these different welding methods for different material , family with FANUC robot system is better ;
介绍了一台适合于钛合金及其它活性金属惰性气体整体保护焊接设备的结构、各部分的功能、设备的工作原理及使用效果。
This paper introduces the structure of an inert gas -shield equipment for titanium alloy and other active metal welding , functions of its corresponding parts and its working theory.
由于钛合金的活性强，熔化焊时需要用惰性气体或真空进行保护。
Because of the high activeness of the titanium alloys, the inert gases or vacuum shielding is needed in fusion welding.
产生高反应活性、性质不相容、强毒性气体的通风柜管路不能连接在一起，并且直接排除室外。
Exhausting highly reactive, incompatible or highly toxic materials shall not be manifolded and exhausted directly to the outside.
用途：用途：用于合成表面活性剂，硫化促进剂，酸性气体吸收剂。
Uses: used for synthesis of surface active agent, vulcanization accelerator, acid gas absorbent.
为了形成微孔聚氨酯材料，在表面活性剂存在下用惰性气体使该氨基甲酸酯预聚物发泡，随后固化。
To form a microcellular polyurethane material, the urethane prepolymer is frothed with inert gas, in the presence of a surfactant, then cured.
为了形成微孔聚氨酯材料，在表面活性剂存在下用惰性气体使该氨基甲酸酯预聚物发泡，随后固化。
To form a microcellular polyurethane material, the urethane prepolymer is frothed with inert gas, in the presence of a surfactant, then cured.
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