split crack 中文意思是什麼
split crack
解釋
縱裂-
Considered anti - crack for asphalt surface and split for lean concrete base, design standard of asphalt pavement with lean concrete base is developed
考慮控制面層反射裂縫和基層疲勞開裂，提出貧混凝土基層瀝青路面的設計標準。 -
The site fabricating technology and controlling crack method of stainless steel split runner for ertan power plant
二灘水電站不銹鋼分瓣轉輪的組焊與裂紋控制 -
“ a crack that threatened to become a split ” ( booth tarkington )
「一條有裂開危險的縫」 （布斯?塔金頓） 。 -
With artificial neural network to consider affecting the rock to crack in pre - split blasting, people have established the calculation of intelligence model system which can predict and forecast the result and overcome the lack of the theory, model and empirical formula. the system has very great realistic meaning in designing and guiding actual engineering. with the rock ' s crack in pre - split blasting as the studied object, the reason of crack of mineral and rock in pre - split blasting and the parameter design are studied in the paper
運用人工神經網路綜合考慮影響巖石預裂爆破成縫的因素，建立運算模型智能系統，可克服目前預裂爆破成縫理論、成縫模型、經驗公式的不足，對實際工程的設計與指導，具有很大的現實意義本文以巖石預裂爆破成縫作為研究對象，對礦巖的預裂成縫機理及其參數設計進行了研究。 -
By comparing the fracture toughness ( kic ), the fracture energy ( gf ) and the crack tip opening displacement ( ctod ) of the same strength grade concrete, it is found that the values of the fracture toughness ( kic ), the fracture energy ( gf ) and the crack tip opening displacement ( ctod ), tested by three - point - bending method and wedge - split tensile method approach, so it is proved that the fracture toughness ( kic ), the fracture energy ( gf ) and the crack tip opening displacement ( ctod ) are related to its own properties such as material, specimen size, and crack size, but unrelated to the test - method
通過比較三點彎曲法和楔入劈拉法測定的相同強度等級混凝土的斷裂韌度k _ （ ic ） 、斷裂能g _ f以及裂縫的尖端開口位移ctod ，發現兩種試驗方法測定的斷裂韌度k _ （ ic ）斷裂能g _ f以及裂縫的尖端開口位移ctod的數值接近，從而證明混凝土斷裂韌度、斷裂能、 ctod的值僅與材料、試件尺寸、裂縫尺寸等試件自身的性質有關，而與試驗方法無關。 -
He had tried to split the tree trunk with his little axe, and his long beard had become trapped in the crack he had made
這個小矮人方才用一把小斧頭劈樹干，他的長鬍子被夾在劈開的樹縫裏面。 -
At first, the author has analyzed the theory, mechanism and shock - absorption in pre - split blasting, studied the rising of crack, expanding and stopping, and did various factors which influence on the crack of rock in pre - split blasting. the main factors have been determined to be the strength of mineral and rock, the diameter of drill, the type of explosive and the growth degree of crack. then, the author has researched bp neural networks " work principle, structure and defectiveness
首先分析了巖石成縫的理論、機理和減震作用，研究了裂紋的起裂、擴展和止裂；分析了各種因素對巖石預裂爆破成縫的影響，確定了礦巖強度、孔徑、炸藥類型和裂隙發育程度作為主要影響因素；並研究了bp神經網路工作原理、結構和缺陷，把改進的bp神經網路運用在巖石預裂爆破參數設計中，建立以礦巖強度、孔徑、炸藥類型和裂隙發育程度為主要影響指標的bp神經網路的預裂爆破參數設計識別模型；運用matlab6 . 5語言開發了爆破參數設計的智能系統，實現了預裂爆破參數設計的自動化，用工程實例驗證系統模塊的功能。
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