function n. 1.功能,官能,机能,作用。 2.〔常 pl.〕职务,职责。 3.庆祝仪式;(盛大的)集会,宴会。 4.【数学】函数;与其他因素有密切关系的事。 The function of the ear is to listen. 耳的功能是听。 the function of education 教育的功能。 discharge one's functions 尽职。 the functions and powers of the National Congress 全国代表大会的职权。 a controllable function【火箭】遥控程序。 public [social] function招待会,文娱晚会,社交集会。 vital functions 生命机能。 vi. (器官等)活动,(机器等)运行,发挥作用。 function as teacher 担任教师。 a sofa functioning as a bed 兼当床用的沙发。 The lathe doesn't function well. 这台车床有毛病。 function digit [letter] 【计算机】操作数码[字码]。
In order to - find out the function relationship between sand discharge capacity and time , and the relation between sand discharge capacity and tonnage , sas program is applied to make linear regression and find the function equation of the former relationship 摘要为了确定排沙量与时间、排沙量与水流量的函数关系,采用sas软件做线性回归得到排沙量与时间的函数关系式,再利用所求函数在区间[ 0 , 24 ]上进行积分得到总排沙量为1 . 93962亿吨。
According to the relationship between material fatigue performance curve and concerned parameters in fracture mechanics , the relationship between fatigue life and crack half length is obtained , that is equivalent crack length of fatigue life . the function relationships between these two aspects are constructed . the experiment data show that this method can express the same character of fatigue life of all kinds of materials and experiment data acquired from different materials can be used each other 通过材料力学疲劳性能曲线和断裂力学之间有关参量间的演变关系,得到了疲劳寿命与裂纹半长的关系,即疲劳寿命的折算裂纹长度,建立了两者之间的函数关系并利用这个函数关系说明了疲劳寿命的切线模量因子法,能反映各种材料疲劳寿命的共同变化规律,试验数据可在不同材料之间互相参考使用,具有重大意义。
The anion surfactant nals was the most efficient in the process and was selected as collector by orthogonal method . the interfacial tension and cmc of nals ( cmc 6 . 5 10 - 3m ) in the solution was measured by hanging ring test , the function relationship between interfacial tensions and nals concentration was : = - 0 . 9523 in 2c - 24 . 534 in c - 81 . 411 . the relation of interfacial adsorption equilibrium in the solution system was respectively tested and calculated with gibbs equation and dynamic method . the conclusion showed that ( 1 ) the experiment result of dynamic method with was highly in coordination with the value which from theoretical calculation . ( 2 ) the surfactant molecule was in arrangement of monomolecular layer at the gas - liquid interface 用吊环法测定了十二烷基硫酸钠水溶液不同浓度与其界面张力的关系,拟合得到的回归方程为= - 0 . 9523ln ~ 2c - 24 . 534lnc - 81 . 411 ,同时还测得其临界胶束浓度值( cmc为6 . 5 10 ~ ( - 3 ) m ) ,运用吉布斯等温方程和动态法分别计算和测定了该溶液系统的界面吸附平衡关系,结论表明: ( 1 )动态法测定结果基本吻合吉布斯方程的理论计算; ( 2 )表面活性剂分子在气?液两相界面是以单分子层形式定向有序排列的。
Second , to solve the local stability problem of the bar under pressure , a function relationship between the sectional area and the inertia moment is established by using the similar transformation . accounting to the critical pressure stress , iterative formulas are derived which include big , middle and small flexible degree 其次,对于桁架结构中受压杆件的失稳破坏,本文提出采用相似变换方法找到截面积与惯性矩的关系,根据压杆的临界应力分别导出大、中、小柔度的迭代公式,设计出压杆的截面积。
Moreover , there are good fitted power function relationship between thermal conductivity and soil water content , soil water suction and salt concentration . meanwhile , based on the measured data of soil water content and soil temperature distribution under temperature - controlled conditions , according to philip ' s empirical equation , through difference method , the water diffusivity under temperature gradient was calculated , which can be expressed as a power function of temperature 此外,研究表明,导热率与土壤含水率、土壤水吸力、含盐浓度之间均存在良好的幂函数关系;在取得一定温控条件下的土壤水分与温度分布实测资料的基础上,根据philip经验方程,通过差分法计算得出温差作用下的水分扩散率,该参数可表示为温度的幂函数形式。
Employing idef to establish framework , dynamitic and functional models , the system also designs a non - back shifting search arithmetic for double - scanning buffer zone and a double - track structure for searching process . according to the characteristics of e - mail control and electronic documentary mining technology , bayes classifiers are made to strengthen the electronic control system in which electronic documentary mining technology is used ; and moreover the double systematic structure of c / s & b / s is constructor with the presence of some function relationships in mining process as well as systematic mining and program handling 系统采用i _ 2def方法建立了结构模型、动态模型和功能模型;设计了双扫描缓冲区的无回溯搜索算法及搜索过程的双栈结构;根据电子邮件监控系统和电子文档挖掘技术的特征,设计了bayes分类器并使用了增强型方法,提出了一种运用电子文档挖掘技术的电子邮件监控系统;构建了c / s和b / s双重体系结构;并给出了挖掘过程的部分函数调用关系及系统挖掘的处理过程、部分处理程序。
In harnessed watershed , a is smaller and b is bigger , but they are contrary in no - harnessed watershed . the flood peak volume modulus and sediment transport modulus is also power function relationship . but parameter a and b is different largely in different watershed and the relativity is not well than relationship between runoff depth and sediment transport modulus 参数a 、 b可以反映流域有无治理的差异,参数a在有治理或部分治理的流域内均小于无治理流域;参数b在有治理流域内则较无治理流域偏大;流域次降雨洪峰流量模数与输沙模数也为幂函数关系,但参数a 、 b在不同流域之间差别较大,其相关性不如径流深与输沙模数关系好。
It builds a physical model according to hoisting capacity , lifting angle and structural stabiliy , theory , solves the problem of function relationships among lifting capacity , lifting angle , boom weight , boom dimension and deduces the natural boundary condition of design parameters , providing a new way to determine crane design parameters 摘要将起重量和起吊幅度为基本设计依据,以压杆稳定理论为分析基础,结合专业知识,建立物理模型,解决了起重量、起吊幅度与吊臂质量、吊臂主要参数之间的函数关系的难题,首次确定出设计参数的自然边界条件,为起重机设计者提供了确定设计参数的新方法和科学依据,具有开创意义。
This paper include the following parts . firstly the sine exciting - voltage is guaranteed by direct digital synthesize technology ; secondly the digital output of cos ( 9 ) and sin ( 9 ) are generated by microcontroller ; thirdly the two voltage signals which are the product of the two former signals gained by the multiplying d / a converter , being filtered and amplified , have constant frequency , and one amplitude has sine function relationship of with the input angle , and the other amplitude has cosine function relationship of with the input angle ; finally the two signals are acquired and analyzed by relative instrument and software 主要由以下几部分组成:用数字频率合成技术( dds )产生正弦激励电压信号u _ msin ( t ) ;用单片机产生幅度的数字量输出sin ( )和cos ( ) ;用乘法型d a转换器实现激励电压和幅度的乘积,并通过滤波器和功放后即得到频率固定,幅值随输入角成正余弦变化的电压信号;最后用数据采集卡采集输出信号,显示波形并进行频谱分析。
The molecular structure of alkanes is described by anovel molecular subgraph coding method , recently developed in this laboratory . it has been shown that there exist very good quantitative structure property / function relationships ( qspr / qsfr ) between the coding and 7 thermodynamical functions and 8 physical properties of alkanes 在拓扑不变量的基础上直接将子图分类、计数、编码,提出了一种新分子拓扑子图指数,已数字化的子图编码部分保持具体分子结构的直观信息。