A method of measuring gas concentration with Michelson interferometer is presented.
本文介绍用迈克尔逊干涉仪测量气体浓度的一种方法。
Predict changes in gas concentration is safety in coal mines of great significance.
预测瓦斯浓度的变化对煤矿安全生产有着重要的意义。
The gas concentration gained by this way is basically coincident with the standards.
通过这种方法测得的气体浓度，与标准浓度基本吻合。
In the unstable flow the radial distribution of tracer gas concentration is asymmetry.
在不稳定的流动状态下，气体的径向浓度分布曲线两边出现不对称。
In the process of mining, it is very important for mining safety to monitor gas concentration.
在煤炭开采过程中，井下瓦斯浓度的测量对煤矿安全生产非常重要。
If time is long enough, the hazardous areas will not exist as gas concentration is diluted by air.
随着时间的延长，泄漏气体不断被空气稀释而使得浓度降低，若时间足够长，危害区域将不再存在。
It is critical to monitor the site fire and gas concentration on the oil platform during production.
在石油平台的生产中，对现场的火灾及气体泄漏进行检测具有十分重要的意义。
The thinning velocity of blowdown acs and the boundary of flammable gas concentration are also relative to those.
放空气体在大气中的稀释速度和可燃气体浓度边界也与放空立管直径和高度有关。
To dilute gas concentration, most coal mine use local fan ventilate, and decrease the possibility of fire damp explosion.
当前国内一般采用局部通风机进行矿井通风，以稀释瓦斯浓度，消除煤矿事故隐患。
You must use a respirator if the fuel-gas concentration in the work area is 5% more than the lower explosive limit (LEL).
如果工作区域的油气浓度比最低爆炸浓度高出5%，必须使用呼吸器。
Experiment results show clearly that this system can detect gas concentration in high precision and has high practicality.
实验结果表明：系统能以较高的精度检测出气体的浓度，具有较高的实用性。
The article used the method of spectrum absorption to measure gas concentration, transmitting optical signal by optical fiber.
本文采用光谱吸收方法通过光纤传输光信号进行气体浓度的在线遥测。
The calculation of the model reveals the distribution variation of flue gas concentration and heat flux density within the furnace.
模型计算揭示烟气温度和热流密度在炉膛内的分布变化。
The principle of intracavity laser absorption and the relationship between gas concentration and the laser build-up time is outlined.
介绍了掺铒光纤激光器内腔吸收谱的基本原理，以及激光激射延迟时间与气体浓度的关系。
The results show that the alarm time depends strongly on both the gas concentration and the emission current of the ionization gauge.
实验数据还表明，快速报警响应时间与气体分子浓度和真空计规管灯丝的发射电流密切相关。
Thereafter, to use ULF geological remote sensing device on ground surface can block out gas concentration range and predict its extent.
据此，在地面使用超低频地质遥感探测仪，即可探测出地下瓦斯气的富集范围，预测其富集程度。
The software is not only used to detect the methane concentration, but also to detect other gas concentration under a little parameter change.
软件不仅运用于甲烷气体浓度的检测，稍加修改各参数，也可以检测其它气体的浓度。
The influence of the different packaging types and micro-perforated parameters on the variety of gas concentration was theoretically analyzed.
理论分析了包装型式、微孔参数对包装内气份变化的影响。
The IR-absorbing methane detecting instrument is designed by converting IR radiation to voltage signal, so the gas concentration is calculated.
该检测仪将红外辐射强度转化为电压信号，实现对甲烷浓度的测量。
The optical analysis method of gas concentration has advantages of large measurement range, high precision, untouched on-line measurement and so on.
气体浓度光学分析方法具有测量范围宽、精度高、非接触在线测量等优点。
Research purposes: Under the condition of natural ventilation, this paper analyzes and calculates the harmful gas concentration in each subsection of tunnel.
研究目的：分析计算隧道各个分段的有害气体浓度，以把握公路隧道在自然通风状态下，其有害气体浓度在隧道内部的分布情况。
Application of some measures, such as semi-close unloading and increase of crane tube plug etc. can availably decrease oil gas concentration in operating area.
采用半封闭卸车、增加鹤管堵头等措施可有效降低作业空间的油气浓度；
By simulating gas with heated air, the influence of swirling flow on gas concentration field at gas burner is investigated according to the principle of heat balance.
以加热空气模拟燃气，根据热平衡原理，考察旋流对燃烧器出口处燃气浓度场的影响。
The system uses C8051F monolithic as control chip, JN5121 module and gas sensor, can automatically record inspection locations, sampling time, gas concentration and so on.
系统采用C8051F单片机作为控制芯片、JN5121模块及瓦斯传感元件，自动记录巡检沿途地点编号、采样时间、瓦斯浓度等信息。
A tracer monitoring for the landfill gas concentration variation on the condition of leachate recycling as compared with that of the un-recycling in semi-aerobic landfill.
对准好氧填埋结构渗滤液回流情况下填埋气产气过程做了跟踪监测。定期测定填埋气中的组分浓度变化，结合填埋场渗滤液水质变化进行分析。
When auxiliary fan without enough pressure used in shaft construction, it was possible to lead gas concentration. The powerful axial flow auxiliary fan may solve the problem.
建井期间未构成全风压通风系统时，通常采用局扇供风，往往造成瓦斯积聚，为此选用轴流式大功率局部扇风机供风，是解决长距离通风的最佳选择。
When auxiliary fan without enough pressure used in shaft construction, it was possible to lead gas concentration. The powerful axial flow auxiliary fan may solve the problem.
建井期间未构成全风压通风系统时，通常采用局扇供风，往往造成瓦斯积聚，为此选用轴流式大功率局部扇风机供风，是解决长距离通风的最佳选择。
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