shell n. (pl. shells,2 義為 shell) 1.殼;介殼;甲殼;貝。 2.(昆蟲(chóng)的)翅鞘;蛹的蛻皮。 3.【解剖學(xué)】種子的外皮;莢。 4.【地質(zhì)學(xué);地理學(xué)】地殼;薄硬巖層。 5.【解剖學(xué)】外耳。 6.【機(jī)械工程】(汽)鍋身。 7.【建筑】薄殼(屋頂);房屋的框架;內(nèi)部未竣工的建筑物。 8.船體;骨架。 9.子彈殼;炮彈;獵槍子彈;爆破筒。 10.(滑車(chē)等的)外框;內(nèi)棺。 11.外觀;外表;外形。 12.單人賽用艇。 13.〔英國(guó)〕(學(xué)校的)中級(jí)班〔四、五年級(jí)〕。 14.〔詩(shī)〕豎琴;七弦琴。 15.=shell jacket. 16.【物理學(xué)】(原子的)電子殼層。 17.(刀劍的)護(hù)手。 18.(像鉆進(jìn)殼中似的)沉默;冷淡。 19. 【計(jì)算機(jī)】操作系統(tǒng)外殼,命令解釋程序〔如DOS等〕。 the shell of an egg [a walnut] 蛋[胡桃]殼。 Beetles have shells. 甲蟲(chóng)有硬殼。 an illuminating shell 照明彈。 a tear shell 催淚彈。 the shell of a pipe 管壁。 You're scarcely out of the shell yet. 你還乳臭未干。 cast the shell 脫殼;蛻皮。 come out of one's shell 不再羞怯沉默。 go [retire] into one's shell 緘默起來(lái);害羞起來(lái);對(duì)人持冷淡態(tài)度;保持距離。 in the shell 在萌芽[潛伏]時(shí)期。 vt. 1.由殼中剝出(豌豆等);〔美國(guó)〕剝(玉米);給…脫粒。 2.用殼體包被;用介殼鋪(路)。 3.轟擊;炮擊[轟]。 4.〔棒球俚〕(投手)使(對(duì)方)獲得多次安全打或得分。 shell oysters 去牡蠣殼。 vi. 1.脫殼;蛻殼;(金屬等)剝落;(果實(shí)等)脫落。 2.炮擊。 3.采集貝殼。 as easy as shelling peas 〔口語(yǔ)〕非常容易。 shell out 〔俚語(yǔ)〕交出;付出;付款,捐獻(xiàn) (S- out your money! 拿出錢(qián)來(lái)!)。
theory n. 1.理論,學(xué)理,原理。 2.學(xué)說(shuō),論說(shuō) (opp. hypothesis)。 3.推測(cè),揣度。 4.〔口語(yǔ)〕見(jiàn)解,意見(jiàn)。 the theory of two points 兩點(diǎn)論。 Darwin's theory of evolution 達(dá)爾文的進(jìn)化論。 theory of equations 【數(shù)學(xué)】方程論。 theory of everything 【物理學(xué)】(把相對(duì)論、量子論和宇宙大爆炸理論都包括在內(nèi)的)萬(wàn)用理論。 theory of relativity 【物理學(xué)】相對(duì)論。 the atomic theory 原子說(shuō)。 Our scheme is good both in theory and in practice. 我們的方案在理論上和實(shí)施上都是好的。 combine [separate] theory with [from] practice 理論結(jié)合[脫離]實(shí)際。 My theory is that we must bring new blood into the Institute through appointment of younger men to important positions. 我的意見(jiàn)是我們學(xué)院應(yīng)該通過(guò)重用年輕一些的人來(lái)注入新的血液。 theory of games 博弈論,對(duì)策論,權(quán)衡利弊得失的形勢(shì)分析。
Shell theory and research on mine safety management 界殼論與礦山安全管理界殼基礎(chǔ)研究
The governing equations are based on the classical laminated shell theory , and including hygrothermal effects 殼體控制方程基于經(jīng)典層合殼理論,并包括濕熱效應(yīng)。
When analyzing the intensity of the drum with the simple numeration and the analogism or the shell theory , the calculative result is not very precise and it " s difficult to describe the nice change of the stress distinctly 采用粗略的簡(jiǎn)化計(jì)算法及類(lèi)比法或者用板殼理論等方法對(duì)滾筒進(jìn)行強(qiáng)度分析,計(jì)算結(jié)果不是很精確,應(yīng)力的細(xì)微變化也很難描述清楚。
On the basis of classical shell theory and piezoelectric equations , existed a laminated shell ' s theory is improved and extended . with mindlin theory - one order shear theory , and considering both of shear deformation and rotating inertial effect , a set of vibration control differential equations , sensing equations and actuating equations of piezoelectric laminated shell are derived through its structure energy functions 本文在經(jīng)典殼體理論和壓電方程的基礎(chǔ)上,對(duì)已有的層合殼理論進(jìn)行了擴(kuò)展,并基于mindlin理論? ?一階剪切理論,同時(shí)考慮剪切變形和轉(zhuǎn)動(dòng)慣性效應(yīng),從結(jié)構(gòu)的能量泛函出發(fā),推導(dǎo)獲得一組廣泛適用的壓電層合殼振動(dòng)控制微分方程、傳感方程和作動(dòng)方程。
To meet this challenge , a research project was supported by ministry of communication and bv shanghai zhenhua port machinery co . . ltd . focusing on analysis of tdtcd ( traditional design theories of crane drums ) the paper has studied the impacts of features under the binding force of wire ropes , the end - plate and rope slot . this study is based not only on the thin shell theory and viscoelastic mechanics to calculate the strength and stability of drum , but also on an experiment with technology in " state of act " 本文結(jié)合交通部重點(diǎn)科技項(xiàng)目“港口起重機(jī)鋼絲繩傳動(dòng)件高性能技術(shù)研究”和上海振華港機(jī)股份有限公司委托項(xiàng)目“起重機(jī)焊接卷筒極限壁厚研究” ,針對(duì)起重機(jī)卷筒傳統(tǒng)設(shè)計(jì)方法偏于保守的情況,以薄殼理論和近代力學(xué)為基礎(chǔ),以現(xiàn)代試驗(yàn)技術(shù)為研究手段,對(duì)鋼絲繩緊箍力作用下的外載特性、端板、繩槽等因素對(duì)卷筒強(qiáng)度和穩(wěn)定性的影響進(jìn)行了系統(tǒng)的理論研究,在深入開(kāi)展卷筒強(qiáng)度、穩(wěn)定性和實(shí)驗(yàn)?zāi)B(tài)分析等試驗(yàn)的基礎(chǔ)上,提出了有別于傳統(tǒng)方法的卷筒強(qiáng)度、穩(wěn)定性計(jì)算方法。
This paper focuses on the research of the stress mechanism of the ribbed shell structure in statics , dynamics and under the explosive load on the basis of the engineering practice of cave depot of single aircraft . in this paper , according to the classical shell theories , the basic differential equilibrium of the ribbed shell structure and the finite element analysis of 3d rippled plate are established , in which the function of annular ribs reinforcement bars and 3d ripped steel plates are distributed in the range of the steel , and the functions along the longitude direction of tension , bending , and torsion are neglected ; applied with dynamic analytical theory , the dynamic model of ribbed shell structure and the analytical theory model of elastic - plastic are set up ; the triangle series method is used to solve the displacement and stress under the distributed load and the concentrated load of the ribbed shell structure 本文以軍用機(jī)場(chǎng)地面單機(jī)掩蔽庫(kù)工程建設(shè)為工程背景,首次對(duì)內(nèi)襯三維波紋鋼板混凝土拱型復(fù)合結(jié)構(gòu)的受力機(jī)理進(jìn)行了靜力、動(dòng)力和爆炸荷載的分析研究。根據(jù)將橫肋、鋼筋及三維波紋鋼板的作用均勻分布在殼體范圍內(nèi)的情況,忽略橫肋、鋼筋及三維波紋鋼板沿殼體母線(xiàn)方向的抗拉、抗彎及其抗扭作用,首次推導(dǎo)出了內(nèi)襯三維波紋鋼板混凝土殼體的微分平衡方程,建立了有限元計(jì)算模型,并采用三角函數(shù)法,求解了三維波紋鋼板混凝土拱型復(fù)合結(jié)構(gòu)在分布荷載和集中荷載作用下的位移響應(yīng)和應(yīng)力響應(yīng),并與普通殼體進(jìn)行了比較。
Firstly , the hertz contact theory is used to design the export moment of the prototype ; deformation status of the flexspine under the elliptical cam wave generator action is analyzed using the column shell theory , whose boundary condition is four force action . design proposal of the wave producer put forward considering the precision theory of rolling friction transmission 首先用赫茲接觸理論對(duì)樣機(jī)的輸出力矩進(jìn)行了設(shè)計(jì);應(yīng)用四力作用下的光滑圓柱殼體理論分析了在橢圓凸輪波發(fā)生器作用下柔輪的變形狀況,結(jié)合滾動(dòng)摩擦副傳動(dòng)精度理論提出了波發(fā)生器總體設(shè)計(jì)方案。