However , with exports of 14 . 7 mn bags and domestic consumption of over 16 mn bags , only limited volumes are expected to be exported until the harvest of the new crop 14 . 7百万袋用于出口和16百万袋用于国内消费后,新豆收获之前,可供出口的数量有限。
Simply state , topology optimization consists of determining the best arrangement of a limited volume of structural material within a given spatial domain so as to obtain the optimal mechanical performance of the concept design 拓扑优化是指确定结构单元、节点及内部边界的空间连接方式。其要求结构工作性态良好,结构物有较高的安全度和可靠性。
Firstly , the computer simulating model of the limited volume unit is established . then pet is chosen as sample . generally , under predetermined nucleation condition , the course of pet isothermally crystallized at 170 c in limited volume unit is simulated 计算机模拟实验首先建立了有限体积元模型,然后选定了pet为样品,一般模拟其在预先成核条件下、 170时的等温结晶过程。
In this paper , the course of isothermal crystallization kinetics of polymer in limited volume unit is simulated by use of the method of monte carlo . four factors influenting on the course of polymer in the limited volume unite isothermal crystallization are analyzed under the given conditions . the four factors are sample volume shrinkage , the change of the linear growth rate of entities g , the change of sample thickness and the change of the number of nuclei 本文采用montecarlo方法研究了高聚物在有限体积元中的等温结晶动力学过程,分析了在一定条件下,样品体积收缩、晶体线生长速率变化、样品厚度变化和晶核数目变化这四种因素对高聚物在有限体积元中的等温结晶过程的影响。