顯微裂縫 的英文怎麼說
中文拼音 [xiǎnwéilièféng]
顯微裂縫
英文
microscopic crack-
According to the m1l - std - 883c standard of thermal cycle loading, the delamination propagation rates at the interface between chip and underfill were studied experimentally by using c - mode scanning acoustic microscope ( c - sam ) for two types of flip chip packages with different states of solder joint
採用mil - std - 883c標準，通過溫度循環實驗，使用高頻超聲顯微鏡（ c - sam ）無損檢測技術，測量了在不同焊點狀態下， b型和d型兩種實際倒裝焊封裝晶元與底充膠界面分層裂縫傳播速率。Steel fiber scatters stress converging in the area of the top end of tiny cracks, restrict the occurrence and development of cracks, diminishes the width of cracks, and enhances the integrity of concrete with the occurrence of cracks via the effect of felting between concrete and steel fiber, and consequently the strength of concrete that resists compression, tension, and shear force increases obviously, and the capability of concrete that resists compact, and fatigue, and the ductility and durability of fissured concrete improve
鋼纖維削弱了混凝土微裂縫尖端的應力集中、限制並約束裂縫的產生和開展、減小裂縫寬度、尤其是通過粘結作用提高了裂后混凝土的整體性，從而使混凝土的抗拉、抗彎、抗剪強度顯著提高，其抗沖擊、抗疲勞、裂后韌性和耐久性也有較大程度的改善。A glance through the magnifying - glass or microscope into the interior of an emerald tells us something about the eventful genesis of this unique gem : here we see small or large fissures ; here the sparkle of a mini - crystal or a small bubble ; here shapes of all kinds
大量的裂縫及內含物。透過放大鏡或顯微鏡我們可以更了解這個獨特寶石的內部構造：我們可看到大小不同的裂隙及不同形狀的小結晶體或氣泡。而當晶體仍在形成過程中，其中一些是有機會To significantly improve both strength and durability of repair interfacial layer between old and new concrete, two attempts were firstly put forward in this thesis : ( 1 ) a kind of new modified primer would be produced by introducing shrinkage reducing admixture into cement mortar, which may both reduce the shrinkage of the interfacial layer, and lessen the content of large crystal in the repaired interface layer, accordingly, remarkably increase the van der waals force of interfacial layer
為大幅度提高新老混凝土修補界面層的強度和耐久性，本文首次提出並實現兩個設想： （ 1 ）以國產減縮劑為外加劑，配製新型改性水泥砂漿界面劑。該界面劑既能減少界面層宏觀干縮裂縫，又不增加大晶體，使界面層形成密實的微細觀結構，顯著提高粘結界面層內晶體間的范德華力。分享友人