crack vt. 1.使破裂;敲破,敲碎,砸碎(陶器等);嗑(瓜子等);【化學】裂化(石油等)。 2.把(槍打得、鞭子抽得)噼啪噼啪(等)地響。 3.打開(酒瓶)喝。 4.弄傷,損壞(信用等);弄啞(嗓子);使發狂。 5.說(笑話)。 6.〔口語〕解決;辨認(暗號);破(案)。 7.〔美俚〕兌開(鈔票)。 8.〔口語〕闖入。 9.撬開(門)。 10.微啟窗戶。 11.刻苦攻讀。 12.【計算機】非法侵入(他人電腦系統)。 vi. 1.破裂;斷掉;(地面等)坼裂;皸裂;縮裂;〔美國〕破曉 (=day cracks)。 2.發坼裂[爆裂]聲,(手槍、鞭子等)噼啪噼啪地響。 3.(嗓子)發啞;(發育期)變嗓子。 4.損壞;(精神)受打擊。 5.〔Scot., 北英〕談,談話;〔俚語〕說笑話;譏諷。 6.【計算機】非法侵入他人電腦系統。 This is a hard nut to crack。 這是一個難解決的問題。 crack sunflower seeds 嗑瓜子。 crack a book 〔美俚〕讀書,用功。 crack a bottle with 和…開瓶酒喝。 crack a crib 〔口語〕溜門撬鎖(偷竊)。 crack a mark [record] 【美軍】打破紀錄,創新紀錄。 crack a prospect 〔美俚〕推銷成功。 crack a smile 〔俚語〕微笑。 crack back 〔美俚〕回嘴。 crack down 〔美俚〕敏捷地做;拼命做。 crack down on 〔美俚〕對…采取嚴厲措施,對…進行制裁。 crack on 滿帆前進;〔俚語〕開足馬力前進,飛快前進;繼續前進。 crack out laughing 發笑。 crack the lingo 〔美俚〕講本行行話。 crack the party 〔美俚〕不請自來赴會。 crack up 1. 夸獎;吹捧某人(crack oneself up 自夸,自大)。 2. (人、身體等)疲憊不堪,有氣無力;〔美俚〕(飛機)墜毀,撞毀;引起(哄堂)大笑;忍不住大笑;笑痛肚子。 crack wise 〔美國〕講俏皮話,打哈哈。 get cracking 〔俚語〕開動,動工;動手,開始做。 n. 1.裂縫,裂紋,皸裂,龜裂;【化學】裂化。 2.破裂聲,爆裂聲,(手槍、鞭子等的)噼啪聲;打擊聲,打擊。 3.疵瑕,缺點;精神錯亂。 4.(發育期)換嗓,變聲。 5.〔口語〕第一流人物;名馬;(競技的)名手;優良的船。 6.〔古、俚〕自大,自夸;〔Scot., 北英〕閑談;〔pl.〕奇聞。 7.〔美俚〕警句,俏皮話,挖苦話。 8.〔口語〕一會兒,片刻。 9.〔俚語〕溜門撬鎖。 Open the window a crack. 把窗子開一條縫。 the crack of a whip 鞭聲。 the crack of thunder 雷鳴。 a crack on the head 頭上的一擊。 There is a crack in your head. 你有點瘋啦。 (at) crack of day 〔英方,美〕(在)黎明,天亮時。 crack of doom 世界末日的霹靂信號(till the crack of doom 到世界毀滅時,到最后)。 in a crack 即刻,立刻。 adj. 〔口語〕最好的,第一流的;出名的,當當的。 a crack hand 妙手,能手。 a crack performer 名演員。 a crack player (競賽等的)能手。 a crack regiment 精銳團。 crack troops 精銳部隊。 a crack team 名隊。 adv. 噼啪地,啪的一聲,尖銳地。 The pistol went off crack. 手槍啪的一聲打了出去。
development n. 1.發展,發達;進化。 2.展開;擴充;開發。 3.發達物,新事物,發展階段。 4.【生物學】發育(史);【軍,數】展開;【攝影】顯影,顯像;【音樂】展開(部);研制,研制成果。 development area 〔英國〕新開發地區。 development of heat 放熱,生熱。
In addition , the shapes can retard the development of cracks and improve the shearing strength according to the results 同時試驗結論還表明,采用型鋼加強對抑制裂縫的發展和抗震有較好的作用。
The bending property of hsc structure under blast load is also observed . throughout all these tests the development of cracks is recorded 另外進行了淺埋高強混凝土拼裝式箱形結構化爆試驗,以檢驗其動載抗彎性能。
Various defects of the runner caused in its design , manufacture process and excessive residual tensile stress promote the initiation and development of cracks excessively 轉輪在設計和制造過程中形成的各種缺陷以及過大的殘余拉應力加速了裂紋的萌生和擴展。
Secondly , comparison of the tested results unveiled effect of various longitudinal reinforcement ratios on development of cracks , final failure mode , and ultimate capacity . primary conclusions were thus drawn 其次,通過對比研究不同縱筋率試件的裂縫開展和延伸規律、破壞形態特征、以及承載能力等,初步總結了縱筋率的影響規律。
Mechanic performance of model beams is studied . 2 . development of cracking and deformation of model beams with different ppr are studied and analyzed . afterwards , calculation method of defection of model beams is put forward 研究并分析了體外預應力混凝土連續梁在不同預應力比率作用下的裂縫發展規律和變形規律及其影響因素,同時提出了撓度的計算方法。
Cracking failure of centrifugal compressor ' s impellers was analyzed , the welding craters in the impellers led to stress concentration . the unsteady gas flow accelerated the development of cracks in the impeller 摘要針對某石化公司離心壓縮機葉輪多次發生開裂、掉塊等故障以及裂紋形成機理進行了分析。分析結果表明了葉輪開裂原因系疲勞開裂,葉輪焊接缺陷產生了焊接弧坑,造成表面應力集中,氣流激振加速了裂紋擴展。
A majority of previous studies on the effect of longitudinal reinforcement ratio to shear behavior of reinforced concrete members were focusing on ultimate capacity , only a few were engaged in detailed recording of the overall development of cracking and investigation of final failure modes 在縱筋率對梁受剪性能的影響方面,已有一些學者進行了試驗研究。但這些研究較為偏重于縱筋率對承載力影響,而較少關注縱筋率對裂縫開展特征和最終破壞形態的影響。
2 ) nonlinear fem was employed to simulate the whole process of changing internal force and deformation , the appearance and development of cracks , and to describe the failure mode and the ultimate strength capacity level . in addition , proven analysis model can provide more information so as to break the limits of test study 2 )通過密肋復合墻體非線性有限元分析,較為真實、簡化地模擬墻體內力和變形發展的全過程,描述裂縫的形成和擴展以及墻體的破壞過程、破壞形態和極限承載力水平。
According to test results of two specimens of local transfer rc joint from inclined column to beeline - shaped wall under vertical static loads and results of corresponding finite element analysis ( ansys ) , fundamental behaviors of the joint are achieved , which include paths of vertical load transfer before and after cracking , stress distributions , occurrence and development of cracks and final failure mode of the joint 本文通過兩個鋼筋混凝土斜柱?一字形薄壁柱局部轉換節點在豎向荷載作用下的靜力試驗以及有限元分析,獲得了該節點的基本性能,其中包括開裂前后的豎向荷載的傳遞路徑、試件應力分布,裂縫的發生、發展,及試件最后的破壞形態等。
Compounding stiffness is introduced for analyzing the characteristics of moment redistribution in the long - span floor beams structure subjected to lateral loading . it is shown from the testing result that the specimen can be analyzed by elastic theory before cracking . the development of cracking in the spandrel beams and the floor beams ( including floor ) causing the compounding stiffness and the bending stiffness of floor beams through the column to change distinctly , correspondingly moment - torque redistribution occurs 由于過柱子次梁、邊主梁的開裂以及梁上次梁(包括樓板)的開裂,使得過柱子次梁的抗彎剛度和邊主梁梁上次梁板組合剛度發生了明顯的變化,導致產生彎扭重分配,一般情況下,組合剛度與過柱子次梁抗彎剛度的比值增大,邊主梁所受扭矩增加,反之,邊主梁所受扭矩減小。