crack vt. 1.使破裂;敲破,敲碎,砸碎(陶器等);嗑(瓜子等);【化學(xué)】裂化(石油等)。 2.把(槍打得、鞭子抽得)噼啪噼啪(等)地響。 3.打開(kāi)(酒瓶)喝。 4.弄傷,損壞(信用等);弄啞(嗓子);使發(fā)狂。 5.說(shuō)(笑話)。 6.〔口語(yǔ)〕解決;辨認(rèn)(暗號(hào));破(案)。 7.〔美俚〕兌開(kāi)(鈔票)。 8.〔口語(yǔ)〕闖入。 9.撬開(kāi)(門)。 10.微啟窗戶。 11.刻苦攻讀。 12.【計(jì)算機(jī)】非法侵入(他人電腦系統(tǒng))。 vi. 1.破裂;斷掉;(地面等)坼裂;皸裂;縮裂;〔美國(guó)〕破曉 (=day cracks)。 2.發(fā)坼裂[爆裂]聲,(手槍、鞭子等)噼啪噼啪地響。 3.(嗓子)發(fā)啞;(發(fā)育期)變嗓子。 4.損壞;(精神)受打擊。 5.〔Scot., 北英〕談,談話;〔俚語(yǔ)〕說(shuō)笑話;譏諷。 6.【計(jì)算機(jī)】非法侵入他人電腦系統(tǒng)。 This is a hard nut to crack。 這是一個(gè)難解決的問(wèn)題。 crack sunflower seeds 嗑瓜子。 crack a book 〔美俚〕讀書,用功。 crack a bottle with 和…開(kāi)瓶酒喝。 crack a crib 〔口語(yǔ)〕溜門撬鎖(偷竊)。 crack a mark [record] 【美軍】打破紀(jì)錄,創(chuàng)新紀(jì)錄。 crack a prospect 〔美俚〕推銷成功。 crack a smile 〔俚語(yǔ)〕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(duì)…采取嚴(yán)厲措施,對(duì)…進(jìn)行制裁。 crack on 滿帆前進(jìn);〔俚語(yǔ)〕開(kāi)足馬力前進(jìn),飛快前進(jìn);繼續(xù)前進(jìn)。 crack out laughing 發(fā)笑。 crack the lingo 〔美俚〕講本行行話。 crack the party 〔美俚〕不請(qǐng)自來(lái)赴會(huì)。 crack up 1. 夸獎(jiǎng);吹捧某人(crack oneself up 自夸,自大)。 2. (人、身體等)疲憊不堪,有氣無(wú)力;〔美俚〕(飛機(jī))墜毀,撞毀;引起(哄堂)大笑;忍不住大笑;笑痛肚子。 crack wise 〔美國(guó)〕講俏皮話,打哈哈。 get cracking 〔俚語(yǔ)〕開(kāi)動(dòng),動(dòng)工;動(dòng)手,開(kāi)始做。 n. 1.裂縫,裂紋,皸裂,龜裂;【化學(xué)】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(diǎn);精神錯(cuò)亂。 4.(發(fā)育期)換嗓,變聲。 5.〔口語(yǔ)〕第一流人物;名馬;(競(jìng)技的)名手;優(yōu)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(yǔ)〕一會(huì)兒,片刻。 9.〔俚語(yǔ)〕溜門撬鎖。 Open the window a crack. 把窗子開(kāi)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(diǎn)瘋啦。 (at) crack of day 〔英方,美〕(在)黎明,天亮?xí)r。 crack of doom 世界末日的霹靂信號(hào)(till the crack of doom 到世界毀滅時(shí),到最后)。 in a crack 即刻,立刻。 adj. 〔口語(yǔ)〕最好的,第一流的;出名的,當(dāng)當(dāng)?shù)摹?a crack hand 妙手,能手。 a crack performer 名演員。 a crack player (競(jìng)賽等的)能手。 a crack regiment 精銳團(tuán)。 crack troops 精銳部隊(duì)。 a crack team 名隊(duì)。 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。
In addition , the calculating methods about the gap of the connectors and the maximum width of crack are discussed in the thesis 另外,作者對(duì)組合梁剪力連接件的設(shè)計(jì)理論及組合梁最大裂縫寬度計(jì)算方法作了逐一地探討。
The static load test was done on the frame beam strengthened by cfrp with frame joint anchored in different mode , and the hearing capacity , deflection and width of crack was surveyed 摘要對(duì)采用不同梁端錨固方式的碳纖維布加固框架梁進(jìn)行靜載試驗(yàn)研究,在承載力、撓度及裂縫開(kāi)展等方面進(jìn)行了綜合比較和分析。
Utilizing the principle of the smoothshaft to open 0 . 4 mm crankshaft to the width of crack : ( 1 ) when it compares with one position crack , crankshaft natural frequency as crack depth than increase and reducing constantly 利用光軸的原理對(duì)裂紋寬度為0 . 4mm的曲軸進(jìn)行研究得出: ( 1 )裂紋同一位置比時(shí),曲軸固有頻率隨著裂紋深度比的增大而不斷減小。
The cast - in - place slab with large - area without special requirement can work with cracks , but the largest crack width must be less than that stipulated in the code of gb50010 - 2002 . hence , the control principle of cast - in - place slab with large - area is to limit the crack , that is , to control the width of crack in the allowable range as stipulated by the code 在規(guī)范gb50010 ? 2002中規(guī)定無(wú)特殊使用和工藝要求的大面積現(xiàn)澆樓蓋結(jié)構(gòu)允許帶裂縫工作,因此,大面積現(xiàn)澆樓蓋結(jié)構(gòu)裂縫控制的原則是限裂,即限制裂縫開(kāi)展寬度在規(guī)范規(guī)定的允許最大裂縫寬度范圍內(nèi)。
According to test of 6 hrb400 reinforced concrete beams and a hrb335 reinforced concrete beam , the flexural strength of members with different ratio are studied , and the crack and deflection behaviors under the state of serviceability are analyzed . the developments , the fracture intervals and the width of cracks have been observed 通過(guò)hrb400鋼筋作受力主筋的6根受彎梁和1根hrb335級(jí)鋼筋混凝土梁的試驗(yàn)研究,著重分析了在不同配筋率下構(gòu)件的受彎承載力及正常使用下裂縫與撓度問(wèn)題,對(duì)使用hrb400鋼筋的受彎梁的裂縫性能進(jìn)行統(tǒng)計(jì)分析。
At first , ploygon aggregate structure of concrete is randomly generated in two - dimensional plane with monte carlo method on the meso - level . then , the growth process of a crack of concrete 3 - point bending beam specimen is analyzed by fem , according to the criterion of maximum circumferential tensile stress . and the path of crack to spread in mortar , aggregate and interfaces of them is gained by the ultimate fracture criteria in construction standard that the width of crack should not be more than 0 . 2mm 首先,在細(xì)觀層次上,根據(jù)蒙特卡羅隨機(jī)抽樣原理,在二維平面上建立了混凝土多邊形隨機(jī)骨料結(jié)構(gòu)模型,然后采用有限元計(jì)算方法,根據(jù)最大周向正應(yīng)力準(zhǔn)則,對(duì)三點(diǎn)彎曲梁構(gòu)件進(jìn)行了開(kāi)裂過(guò)程的模擬,并以建筑規(guī)范中構(gòu)件裂縫小于0 . 2mm的要求為最終破壞標(biāo)準(zhǔn),得出了裂紋在基質(zhì)、骨料及界面的擴(kuò)展路徑。
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(yīng)力集中、限制并約束裂縫的產(chǎn)生和開(kāi)展、減小裂縫寬度、尤其是通過(guò)粘結(jié)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(qiáng)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。
On the base of the research about the prestressed concrete structures at chongqing jianzhu university , a convenient and practical way to control the cracks is introduced in the pages , which is called the method of nominal tension stress that control the width of cracks by the nominal tension stress ftk under the working loads and the limited loads 文中在參考重慶建筑大學(xué)多年研究成果的基礎(chǔ)上,通過(guò)研究四榀預(yù)應(yīng)力框架梁的裂縫發(fā)展情況,推薦了一套了實(shí)際結(jié)構(gòu)工程設(shè)計(jì)中方便的裂縫控制方法? ?以名義拉應(yīng)力ftk控制短期荷載及長(zhǎng)期荷載作用下預(yù)應(yīng)力梁的裂縫要求。