metal-pointed 中文意思是什麼
metal-pointed
解釋
帶鐵尖的-
A safety pin has a metal covering over the pointed end
安全別針在尖端有一個金屬套。 -
With metal fatigue in material mechanics, this paper deduces the limestone fatigue curve of longmen grottoes by means of marble s one within the error permission. by the experiment elects the crucial factors of current vibration environment in longmen grottoes, the author contrasts the result of the experiment with its fatigue curve referred above and analyses the fatigue effect of longmen grottoes. finally, it is pointed out that after longmen grottoes have being suffered weathering and water - erosion more than 1500 years, the vibration environment is becoming an crucial factor leads to fatigue effect, especially in those weak surface carvings just like the crossings of several rifts, serious weathering places, etc
借鑒材料力學中金屬疲勞破壞的研究手段，在誤差允許范圍內用大理巖疲勞曲線推導出門石窟石灰巖疲勞曲線。通過對石窟實際振動環境中典型要素的抽取和振動試驗，將試驗結果與疲勞曲線進行對比，分析了門石窟的疲勞破壞效應。文章指出，在經歷了1500多年的風化和流水溶蝕后，振動環境已成為導致門石窟某些薄弱點如多條裂隙交叉點嚴重風化酥解的壁面雕刻品等產生疲勞破壞的重要誘發因素。 -
Then this paper pointed out that dfc could predict the forming limit of metal sheet with low plasticity well and meantime take the change of forming path into account
指出利用韌性斷裂準則，不但能夠較好地預測塑性差的板料成形極限，而且還能考慮應變路徑的變化。 -
These movements are controlled by the trainer with the metal - pointed stick, and the trunk eventually becomes so sore that the elephant curls it up and seldom afterwards uses it for offensive purposes
訓練員要用有鋒利金屬尖的長棒控制它的這種舉動，象鼻子最後疼得卷了起來，以後它就很少用鼻子去進攻了。 -
Abstract : it was studied by us that new technologies using strong pulsed magnetic field and electric current were applied to refine metal ' s solidified structure. these technologies improved remarkably the solidified structure of ly12 aluminum alloy and made the solidified grains more equiaxed and apparently finer compared with that of the normal sample, which is of more dendrite grains. the stronger the strength of the pulsed electromagnetic field, the better the improvement effect was. the refinement mechanisms of the new technologies were analyzed theoretically. new phenomena and problems occurred in our experiments were also pointed out in this paper
文摘:提出了用強脈沖磁場和電流細化金屬凝固組織的新工藝.與未經磁場或電流處理的凝固樣品相比，強脈沖電磁場能夠顯著地改善ly12鋁合金的凝固組織，使晶粒明顯細化、球化，電磁場的強度愈強，這種改善效果愈明顯.對該新工藝的細化機理進行了理論分析，同時，指出了實驗中的新現象和新問題 -
According to my research about the damage of cranes " metal structure of our country ' s ports recently and the investment of the causes and principles, we pointed out the necessity and importance of the inspecting of the state of cranes " mental structure. 2. through fatigue test and theoretic analysis of structure, principle of destruction is educed about crack due to structure fatigue to mental structure of portal crane
本文主要內容有： 1 、通過對目前我國港口門座起重機金屬結構破壞的現狀調查，分析了破壞的原因和機理，提出了對門機金屬結構進行狀態監測的迫切性和必要性； 2 、通過結構疲勞實驗和理論分析，得出了結構疲勞裂紋對門機金屬結構的破壞原理。
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