1)drainage radius抽放半径
1.The determination method of coal gas drainage radius based on methane flow state基于瓦斯流态的抽放半径确定方法
2.The experiment and determination of eliminating outburst drilling holes drainage radius with floor rocks cross drainage drilling holes pre-drainage gas in No2-1 coal seam of Cuimiao Coal Mine are introduced.介绍了崔庙煤矿二1煤底板岩石穿层抽放钻孔预抽瓦斯消突钻孔抽放半径的实验与测定,确定了合理的抽放半径,以指导矿井消突工作。
3.In order to measure the effective drainage radius of the borehole in seam and to discover the rational calculation formula,the initial gas emission velocity from the borehole,gas pressure,borehole gas density,and others were taken as the investigation indexes.为了测定煤层钻孔的有效抽放半径并探索合理的计算公式,将钻孔瓦斯涌出初速度、瓦斯压力、钻孔瓦斯浓度等作为测定考察指标,在2个不同煤矿对同一煤层进行了测定研究。
英文短句/例句
1.Measuring and Calculation Method of Borehole Effective Gas Drainage Radius煤矿瓦斯有效抽放半径的测定计算方法
2.Experimental Investigation on Pressure Falling Method Measuring the Borehole's Influence Radius压降法测定钻孔的抽放影响半径试验研究
3.Gas drainage in seam with large auto variable diameter bore holes自动变径大直径钻孔抽放煤层瓦斯试验
4.Place over top/bottom half of one side of a transformer to make a center tapped transformer.放在变压器一侧的顶半部/底半部上,生成一个中间抽头变压器。
5.Defining Efficient Influence Radium of Drilling Hole Gas Extracting by Using Gas Flow Theory采用瓦斯流场理论确定钻孔瓦斯抽采有效影响半径
6.Study on Gas Storage Law and Effective Extracting Radius of Borehole in Deep Coal Seam深部煤层瓦斯赋存规律及钻孔抽采有效半径研究
7.Generation Mechanism of Comb-Like Waves in Multi-Longitudinal Mode Laser Diode-Pumped Raman Fiber Amplifier多纵模半导体激光抽运的拉曼光纤放大器中梳状波产生机理研究
8.Nonlinear processes in strong ultrashort pulse pumped semiconductor optical amplifier强超短脉冲抽运下半导体光放大器中的非线性过程
9.A radial part, such as a ray, spoke, or radius.放射部辐射状的部分,如光线、轮辐或半径
10.Analysis on Influencing Factors of Gas Emission with Boreholes to Determine Drainage Radius钻孔瓦斯涌出量确定排放半径影响因素分析
11.Application of Geological Survey to Casing Running in Large Aperture Gas Drainage Well地质测量在大孔径瓦斯抽放井下套管施工中的作用
12.Drag onto the page, then place over top or bottom half of one side of a transformer to make a center-tapped transformer.拖到绘图页上,然后放在变压器一侧的上半部或下半部上,可形成一个中间抽头的变压器。
13.The application of the gas drainage technology in Donghai coal mine is introduced, including gas drainage in close coal layer, gas drainage in goaf, gas drainage from coal, and local gas drainage.介绍瓦斯抽放在东海矿的应用,抽放方式为邻近层抽放、空区抽放、本煤层抽放及局部抽放。
14.The radiation radius of the radioactive radium radiator in the stadium is variable.放射性的镭暖气装置的辐射半径在体育场是易变的。
15.He smoked at least half a packet of cigarettes a day.他每天至少抽半包烟。
16.aBout half the guys in the village were hay Burners.村里约有一半人抽大麻。
17.That's how you always back out.你老是这样半路抽梯。
18.light pumping semiconductor laser光抽运半导体激光器
相关短句/例句
extracting radius抽采半径
3)radius of grazing放牧半径
4)radius of dewatering influence抽水影响半径
5)effective degassing radius有效排放半径
1.Test measurement of the effective degassing radius of advancing hole implemented by QFZ-22 borehole;QFZ-22钻机实施超前钻孔有效排放半径的试验测定
6)gas discharge radius瓦斯排放半径
延伸阅读
利用小半径模具弯制大半径管件高档汽车座椅因座椅形状需要,其骨架通常有3维大半径复合圆弧,作为生产汽车座椅的专业厂,我们常有这样的零件要加工。 安徽淝河客车厂凯斯鲍尔豪华客车座椅靠背骨架,成型圆弧较大,有4种弯曲半径,且有3维复合弯,我们手头有的精密弯管设备-美国伊顿伦纳德公司的矢量弯管机VB200HP只能弯制弯曲半径203.2mm以内的管件。 如何利用弯管机弯出这样的大半径3维复合弯?我们分析了零件的特性:形状要正确,但由于骨架是包裹在护面和海绵软垫之中的,零件不外露。因此采取了将大半径圆弧分解为多个小半径圆弧与多段直线依次相连的方法,近似地获得所需形状。首先将其分段,将各大圆弧作成多段55mm长的直线相连的折线,计算出各交点坐标,然后用恰当半径的圆弧结合旋转度将相邻线段连接,形成近似的大半径圆弧。这样产生的新的管件符合VB200HP弯管机的加工条件,同时由于有较多点的坐标与原设计一致,分段弯曲造成的过渡不流畅由于零件的装配隐蔽性而显得无关紧要。 实践中,我们在对管件实样分段划线的基础上采用美国伊顿伦纳德公司的另一台设备-VECTOR 1 S4XL激光测量机,通过对每一分段测2点的方法,获取圆弧近似折线的交点坐标,进而转换成弯管程序弯制管件。表1为该零件的坐标,表2为该零件的弯管程序(注:L为直线段长度,R为旋转度,A为弯曲角度)。 进而,我们可以把这种方法应用到其他类似方面-只要是隐蔽的或者是非装饰性的还有试制的弯管,都可以采用本文所述方法。这样,许多原来不能用VB200HP弯管机弯制或难以弯制的管件,现在都能轻而易举地制造出来了。