two-line ground 中文意思是什麼
two-line ground
解釋
雙線接地-
The “ genabon ” series product has : the environmental protection foam rubber paint, water wooden vessel paint, polyester repairs the paint, flexibility texture suffers the coating and have no the benzene poison nitric paint, furniture industry uses the paint and have no the benzene all - powerful gum, refractory coating, arrest burnt two use to repair the paint and have no the not poisonous condensate in benzene turn, have no the benzene dilution a printing ink, oil building coating, ground ping paint, street nark line the paint, industry antisepsis coating etc
「金耐寶」系列產品有：環保乳膠漆、水性木器漆、聚酯裝修漆、彈性質感受塗料、無苯毒硝基漆、傢具工業用漆、無苯萬能膠、防火塗料、阻燃兩用裝修漆、無苯無毒固化劑、無苯稀釋劑、特種油墨、油性建築塗料、地坪漆、馬路標線漆、工業防腐塗料等。 -
2 comparative study on morphology in the light of the form of the materials, hup shows more approximate relationship with gri : they are 50 ~ 70cm high at the period of fructescence ; both are perennials and reproduce themselves by root stock, and especially, hup can also reproduce itself by branch roots and buds growing from stipes when the stems fall againt the ground, and then those buds develop into new bodies ; while gri can reproduce itself not only by vegetative propagation but by seeds. both of hup and gri characterize with bigger leaf blade and with the approximate form of simple leaf, with root stock, and with two - line seeds in one fruit
2形態學比較從形態上來看，新種hup與分佈海拔高度相近的gri比較接近:植株體高大，果期株高50一7ocm ;都為多年生，能以其根狀莖繁殖，但前者還以較為特殊的營養體繁殖後代，即倒伏后每個莖節上長出新的根和芽，發育成獨立的新植株，後者既能以營養體繁殖，又可通過種子繁殖;具有較大的葉片且單葉形態相近，果實內有二行種子（其它種為一行） . 。 -
After expounding the power supply and current collection modes of the rolling stock in shanghai umt pearl line in terms of technology and economy, the author argues that two current collection modes shall be adopted for shanghai umt pearl line, i. e. a third rail collector be on skybridge while the overhead contact line on the ground
摘要闡述了城市軌道交通車輛供電受流方式的特點，並從技術和經濟兩方面對上海明珠線車輛供電受流方式進行了探討，提出了明珠線車輛應採用雙受流方式，即高架橋上採用接觸軌受流器受電，地面採用架空接觸網受電弓受電。 -
This can fully consider the effect of the structure of transmission line and the selection of lighting parameter etc. by calculating and analyzing various of factor that affect the lightning tripping probability of 500kv double circuit transmission line, we can draw the conclusions : the result by intersecting method is more accord with the practicality circumstance than by existing standard methods, using unbalance high insulation and reverse sequence of wire can reduce the contemporary outage rate of double circuit line, reducing the footing resistance is one of the most efficiency method to reduce the back stroking rate of double circuit transmission line, the double back stroking rate and the single back stroking rate will fall by three ground wire, when the footing resistance is 10 ohm, the back stroking rate by three ground wire is 83 percent of by two ground wire
在分析輸電線路繞擊耐雷性能時，對線路的雷電屏蔽問題進行了分析，提出對擊距法進行改進，充分考慮了風速的影響因素，編寫了具有工程實用價值的計算線路繞擊耐雷水平的程序，此方法可以充分考慮線路結構和雷電參數等對繞擊率的影響。通過對影響500kv同桿雙回線路雷擊跳閘率的各種因素進行了計算和分析，得到以下結論：採用相交法的計算結果比定義法更符合實際運行情況。採用不平衡高絕緣方式和導線逆相序排列可以大大降低雙回同時跳閘率。 -
By face failure and ground subsidence investigation and in - suit monitoring analysis in some lots of shenzhen metro phase line, especially of lot 3a in which two large ground landlides have occurred in construction, the reasons of ground subsidence are expatiated respectively from three aspects, including the characters of the physical mechanical parameters of stratum above tunnel, the monitoring analysis of stratum deformation and contruction technics causation
通過對深圳地鐵期工程土建施工中全線部分暗挖標段出現的工作面失穩、地表塌陷工程實踐和現場監測結果分析，特別著重對連續2次出現地表塌陷的3a標暗挖隧道研究，從隧道上覆地層物理力學性質參數、地層變形監測分析及施工工藝原因3方面闡述了地表塌陷的原因。 -
In the external region, heat transfer between the u - tube borehole and the ground is considered with a model of a finite line - source in a semi - infinite medium, and it is the first time to achieve an analytical solution of the temperature distribution for a such a transient two - dimensional conduction problem by means of the green - function method
對單個鉆孔的傳熱劃分為兩個區域分別進行研究。在鉆孔周圍區域，將豎直u型管的傳熱簡化為有限長線熱源的傳熱問題，採用格林函數法首次得到了有限長線熱源溫度分佈的解析解。 -
Power cable route protection zone : the areas between two parallel lines formed by 0. 75 meters on both sides of the ground mark of underground cable route ; for sea - bottom cables, the zones should be the water surface between the two parallel lines formed by two nautical miles on both sides of the line ( 100 on both sides of the line in port ) and no less than 100 meters on both sides of the line in rivers ( not less than 50 meters for mid - sized and small rivers )
（二）電力電纜線路保護區：地下電纜為線路兩側各零點七五米所形成的兩平行線內的區域；海底電纜一般為線路兩側各二海里（港內為兩側各一百米） ，江河電纜一般不小干線路兩側各一百米（中、小河流一般不小於各五十米）所形成的兩平行線內的水域。 -
By study, we can know that when one - phase ground fault happens on the line, more far the fault location is from where relays place, more less is the difference of the two zero sequence currents, while hen one - phase ground fault happens on the other line, more far the fault location is from where relays place, more is the difference of the two zero sequence currents
研究表明，當本回線路發生單相接地短路時，在通過公式計算得出的一特定值為正時，離保護安裝處越遠，本回線路零序電流與非故障線路零序電流相位差值越小；當另一回線發生單相接地短路時，離保護安裝處越遠，本回線路零序電流與故障線路零序電流相位差值越大，該值為負時則反之。
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