history n. 1.歷史,歷史學。 2.沿革,來歷;(個人的)履歷,經歷。 3.對過去事件的記載;大事記。 4.對形成未來的進程有影響的事件[思想]。 5.過去的事。 6.歷史劇。 a case history 病例,典型例證。 Ancient [Medieval, Modern] H- 古代[中古、近代]史。 natural history 博物學,自然史。 This sword has a history. 這劍有來歷。 She has a history. 她的身世有難言之隱。 temperature history 溫度變化過程。 time history 時間關系曲線圖。 be history 成為歷史;完蛋。 H- repeats itself. 〔諺語〕歷史往往重演。 make history 影響歷史進程,做名垂青史的大事。
Project for counting methods of road loading history 汽車路面載荷歷程計數法的一種新思路
Abstract : the remaining life of speciment is dependent upon loading history , under two level cyclic loading 文摘:兩級循環(huán)加載條件下,材料的剩余壽命強烈地依賴于加載歷史。
This option is not recommended for cyclic or highly nonproportional load histories in small - strain analyses 我需要做一個混凝土構件的極限承載力的分析,這樣的分析任務是不是屬于大應變分析?
Increment strain theory was applied to calculating the stress distribution from difference equation and the effect of loading history on them was discussed 利用增量理論,由差分方程算出應力分布,并分析了加載歷史對其影響。
The effect of load history is taken into account . the method and formula confirmed by that results of numerical simulation and calculation in theory are in good agreement with the experimental results 對參考文獻的試驗梁進行數值模擬和理論計算的結果與試驗相吻合,表明本文計算方法與計算公式的正確性。
Then the finite element method for evaluating dynamic loading history was carried out by using the measured structure responses under the same loading . an example is given to verify the effectiveness of the proposed technique 6推導了求解振動荷載的公式,提出了由結構對振動荷載的反應求振動荷載時程的有限元方法。
To analyse stretch bending of narrow strip by numerical calculation , taking the loading history into account , the deformed zone was divided into many elements to determine their strain by the condition that constant volume remains in deformation 摘要在考慮加載歷史的情況下,為采用數值方法研究窄板拉彎成形,將變形區(qū)劃分成若干個單元,按塑性變形體積不變條件,確定單元應變。
The combination of lateral stress and maximum vertical strain denotes the loading history and the reduction of tensile strength and compressive strength denotes the damage of concrete . this work is the theoretical foundation of study on the damage , of concrete due to loading history 分別用經歷過荷載歷史后混凝土試件的抗壓和抗拉強度的劣化來定義其抗壓和抗拉損傷,為下文深入研究損傷隨荷載歷史的發(fā)展演化規(guī)律奠定了扎實的理論基礎。
By studying the rule of damage evolution and remaining life under conditions of two level cyclic loading , it is considered that damage evolution and remaining life of specimen are dependent strongly on damage and hardening state caused by loading history , under multi - level cyclic loading 通過對兩級循環(huán)加載下?lián)p傷演化規(guī)律和剩余壽命的研究,認為在兩級(或多級)加載條件下,材料的損傷演化和剩余壽命強烈地依賴于加載歷史造成的損傷和硬化狀態(tài)。
Finally , the relationship between the damage and the descent of ultrasonic velocity due to triaxial compressive loading history was investigated . it is concluded that the ultrasonic pulse method is convenient and applicable to estimate the damage of concrete due to loading history in engineering practice 最后,根據超聲波探傷原理對混凝土載后損傷與超聲波速降低之間的關系進行了細致的研究,取得了一些對工程實踐具有重要指導意義的結論。