principal adj. 1.主要的,首要的,最重要的;第一的。 2.领头的;负责人的,首长的。 3.资本的,本金的,作为本钱的。 the principal actor 主要演员,主角。 the principal boy [girl] (哑剧中)扮演男[女]主角的女演员。 the principal offender 【法律】主犯。 the principal sum 资本,本金,本钱。 principal operations 主力战。 principal clause 【语法】(复合句中的)主句。 principal order 【化学】主序模。 principal parts 【语法】(动词的)主要变化形式〔现在、过去式及过去分词〕。 principal sentence 【语法】主句 (=principal clause)。 principal tone 【音乐】主音。 n. 1.长;长官;首长;负责人;校长;社长;会长。 2.主动者;决斗的本人 (opp. second) 主要演员,主角;【法律】主犯;本人;(经纪人、代理人、受委托人所代表的)委托人 (opp. agent, surety)。 3.【商业】资本,本金 (opp. interest, dividend) 基本财产 (opp. income)。 4.【建筑】(主要)屋架;主构,主材。 5.【音乐】主音栓;(音乐会的)主奏者,独奏者,独唱者,主演者。 6.(艺术作品的)主题;特征。 a lady principal 女校长。 I must consult my principal. 我必须同委托人商量。 principal and interest 本利。 a principal in the first degree 主[从]犯。
maximum n. (pl. maximums, -ma ) 极点,最大,最高,最高额,最大值;最高点;最大限度;【数学】极大(值)(opp. minimum)。 The excitement was at its maximum. 兴奋到极点。 adj. 最大的,最高的,顶点的,最多的。 maximum draught [draft] 【航海】最大吃水深度。 maximum obscuration 【天文学】蚀甚。 a maximum range 最大射程。 a maximum thermometer 最高温度计。
Using the angle between orientation of maximum principal compressive stress and strike of source - faults , the vertical seal and open features of source - faults in the end of yimin stage sedimentary period ( the main oil gas accumulation period ) are studied , showing that the source faults in the central area are poorly sealed and well opened in vertical direction and ant the main migration pathway of oil gas generating and expelling from the source rock of nantun formation 利用最大主应力方向与源断裂走向之间夹角大小,对贝尔凹陷布达特群源断裂在主要成藏期伊敏组沉积末期的垂向封闭与开启性进行了研究,得到了贝尔凹陷布达特群源断裂在凹陷中部垂向封闭性差,开启程度高,是南屯组源岩生成排出油气向布达特群运移的主要输导通道这一认识。
Obtain these chief research achievements . ( 1 ) the method of hydraulic fracturing , kaiser effect experiment and the finite element numerical simulation computation results , the direction of maximum horizontal principal stress intersect the small - angle of tunnel axial line , it is favorable to the stability of tunnel peripheral rock ; according to the test rust of field stress - relief method , at the present time , zhe gu mount tunnel have n ' t access to high crustal stress site , maximum principal stress magnitude is 17mpa ~ 20mpa 主要获得以下研究成果: ( 1 )综合水压致裂法、室内岩石kaiser效应试验和有限元数值模拟计算研究成果,最大水平主应力方向与隧道洞轴线小角度相交,对隧道围岩稳定性有利;根据现场应力解除法测试结果,目前鹧鸪山隧道尚未进入高地应力段,最大主应力量级为17mpa 20mpa 。
Presents the investigation of the heat conduction behavior , internal thermal stress field of specimen under thermal shock and microscopic damage and failure of the tungsten based composites by combination of macroscopic and microscopic analyses and integration of material science and mechanics ; describes a microscopic mechanical model based on the microstructure of components with macroscopic stress applied to the microscopic model as that of maximum principal stress at the center , and the fringe of the specimen , and the microscopic stress fields obtained through calculation by the finite element method , and concludes from test results that the maximum principal stress is first generated inside the test coupon , , and a failure will be first initiated in the inclusion if the material fails at this time ; the maximum principal stress moves to the edge of the test coupon after the test coupon is heated for a period of time , and the failure will first be initiated in the base if the material fails at this time 从材料设计的思想出发,采用宏观与微观、材料科学与力学相结合的方法,对钨基复合材料的热传导行为、材料在热冲击载荷下的内部热应力场及材料细观结构的破坏行为进行了详细的理论研究.根据钨基复合材料的细观组织结构建立了材料细观模型.在宏观分析的基础上,分析了材料微结构内部的破坏行为.分别取试件心部与边缘主应力值最大点的应力状态,施加在所建立的模型上,用有限元方法计算了模型内部的弹性应力场.结果表明:试件主应力最大值首先产生在试件内部,此时,如果材料发生破坏将先从夹杂中开始;加热一段时间后试件中的最大主应力值转移到试件边缘,此时材料发生破坏将先从基体中开始
Based on our own simulation results and results of some numerical simulation of single fold structure by other investigators in recent years , the factors that affect single fold shapes and the variation of maximum principal stress and horizontal strain during the deformation of single fold are discussed in this paper 本文结合近年来单层褶皱构造数值模拟研究进展,以及笔者近几年来对单层褶皱所进行的数值模拟实验研究,主要论述了单层褶皱变形的影响因素,单层褶皱变形过程中的最大主应力与水平应变的变化及其影响因素等。
The result indicates that under the condition of temperature sudden drop , the temperature of face slab ' s surface and centre will fall consecutively along with the temperature sudden drop , and the face slab ' s surface temperature drop - cut range will reach maximum ; under this condition , the tensile stress appears in the face slab ' s surface and centre , the maximum principal stress in the face slab ' s surface is larger titan that in the face slab ' s center ; the maximum principal stress in the face slab ' s surface and centre both occurs in the position that the elevation equals approximately to half of the dam ' s height 结果表明,在气温骤降条件下,面板表面及中心的温度将随气温骤降的发生而持续降低,其中面板表面温度降幅最大;此时面板表面和中心均出现拉应力,面板表面的最大主应力大于面板中心的最大主应力;面板表面和中心的最大主应力均发生在高程约为坝高一半的位置。