体大
- 与 体大 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
MethodsThe rat hind paw swelling elicited by injection of carrageenan and measurement of NO concentration were used to evaluate anti-inflammatory activities; Analgesic effects were evaluated by torsion body method; expandedass and capillary tube methods were used to detect cruor activity.
方法采用角叉菜胶致大鼠足跖肿胀模型和检测NO含量评价延龄草乙醇提取物的抗炎活性;用扭体法观察延龄草乙醇提取物的镇痛作用;采用玻片法、毛细管法测凝血时间研究延龄草乙醇提取物的凝血作用。
-
The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.
本文的主要内容如下:1对翅片管蒸发器结构特点进行分析,选取适当的微元控制体,就干、湿和霜工况下对每个微元分别进行传热传质分析,基于经验关系式确定霜的有关参数,对于霜工况下的霜生长建立模型,经适当假设,运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型,为系统仿真奠定基础; 2对蒸发在大扰动下的开、停机过程,运用动态集中参数模型进行分析和计算,为更好地描述制冷系统运行的全过程奠定基础,同时也为制冷系统实现自动控制提供一定的理论基础; 3对蒸发器正常运行过程,运用动态分布参数和参数间定量耦合的观点来分析和计算,为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性; 4编写翅片管蒸发器动态特性仿真计算程序,可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场,实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。
-
The results show that temperature affects the viscosity and crystallizability of basalt melt,and the chemical composition also has significant impact on these properties.
实验结果表明,粘度、析晶性能随着温度的变化而变化,同时也显示了化学组成的变化对熔体粘度和析晶性能产生较大的影响。
-
Higher contact resistance due to poor adhesive of polyolefine matrix to cupric electrodes.
聚烯烃类高分子基体对铜质金属电极的粘合性较差,易产生较大的接触电阻。
-
Based on the field investigation of grouting tunnels in the mountain on the left bank of the Shuibuya Dam, a sectional statistical analysis is performed on the areal corrosion ratio of grouting tunnels at different elevations of the curtain line section and the maximal diameter of solution caves, and the corrosion characteristics of rocks in the section of impervious curtain line are obtained.
利用水布垭大坝左岸山体灌浆平硐现场的调查结果,对防渗帷幕线剖面不同高程灌浆平硐的面溶蚀率和最大溶蚀洞径进行分区统计分析,获得了防渗帷幕线剖面岩体溶蚀特性。
-
Martha Dandridge Custis was older, but only by three months -- she was twenty-seven to his twenty-six when they met.
凯丽。菲尔菲克斯,他最好朋友的妻子。玛撒。库斯体斯,大些,但仅仅三个月--相遇时她27岁而他26岁。
-
Use of large print, Braille, Moon, keyboard skills, use of telephone and cassette recorder, communication with Deaf-Blind people
例如如何使用大字体,布莱叶点字法,穆恩体,键盘,电话,磁带录音机,如何和聋人和盲人交流等。
-
On this basis, the solidification behavior of decagonal quasicrystal in the undercooled Al72Ni12Co16 alloy melt, such as nucleation and growth mechanism, was systematically investigated.
本文的主要研究内容及获得的结论如下:(1)采用惰性形核涂层技术和循环过热的方法,使Al_(72)Ni_(12)Co_(16)合金熔体最大获得了180K的高过冷度。
-
Finally the mechanisms and factors of decarburization of WC particles in spraying were explor...
结果表明:纳米结构WC-12Co涂层结构致密,孔隙率低,与基体结合状态良好;纳米粉末在喷涂过程中比微米粉末氧化失碳严重,并发生了不同的纳米晶粒的长大;纳米粉末在喷涂过程中的氧化脱碳程度不仅与喷涂工艺有关,还在很大程度上取决于粉末本身的结构特性。
-
Mainly aiming at these existing problems of animation role model coupling degree high and design difficulty big, we have designed a two-layer decomposition group animation role model based on autonomous intelligent agent.
针对动画角色模型耦合度高、设计实现难度大的问题,设计了一个基于自主智能体的两层分解群体动画角色模型。
- 推荐网络例句
-
On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
-
Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
-
You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?