black fracture 中文意思是什麼

black fracture 解釋
黑色斷口
  • black : n 布萊克〈姓氏〉。adj 1 黑，黑色的。2 暗的；黑暗的。3 （教士等）穿黑衣的。4 污染的，（手等）弄臟...
  • fracture : vt. ,vi. （使）破裂；（使）折斷；（使）斷裂。n. 1. 破裂，折斷，斷裂。2. 裂痕，裂縫，裂面。3. 【醫學】挫傷，骨折。4. 【礦物】斷口；【地質學；地理學】斷層。
  1. One grade of black tourmalines of craft, the surface is smooth and glossy, the fracture is pitch - black, flawless, the hardness is high, cut, polish, throw and grind and make the ornament, necklace, pendant, inlaying and give up the best material of taxi

    電氣石的化學通式為nar3al6 si6o18 bo3 3 oh ， f 4 ，晶體屬三方晶系的一族環狀結構硅酸鹽礦物的總稱。
  2. By comparing vertical fracturing well simulation with a streamline model and black oil model, it was pointed out that in simulation of vertical fracturing wells of hydraulic fracturing by using grid amplification there existed many drawbacks, such as grid orientation, calculating times doubled with the increase of grid number, the heterogeneity of model increased as fracture existence, which resulted in difficulties of equation solution and convergence

    摘要通過流線模型和黑油模型模擬垂直裂縫壓裂井的對比分析，指出了在黑油模型中運用網格放大技術模擬水力壓裂垂直裂縫井生產動態存在的諸多缺陷，如網格取向嚴重、計算時間隨網格數目增加而成倍增加、裂縫的存在增加模型的非均質性從而嚴重加大方程的求解難度，方程求解出現不收斂等。
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