无值化
- 与 无值化 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Part II, the artificial boundary condition and its numerical methods based on natural boundary reduction for a hyperbolic initial boundary value problem in an infinite domain with a concave angle is investigated.
第二部分,研究一类具有凹角的无界外区域的双曲型初边值问题基于自然边界归化的人工边界条件及其数值方法。
-
Recently, Environmental protection and saving the energy topic is paid attention to by the international community, the focal point of this research is in the load end of the air conditioner system, such as PAH and AHU and FCU install server, controller, monitor, and various types of reaction equipment, such as one degree of devices, humidity device, carbon dioxide, motion detecter device ,etc., will respond the return value to the air conditioner knowledge management system through the borderless internet immediately, air conditioner knowledge management system in accordance with judge, flexible to change the air conditioner with logic through computerization to make sure air conditioner dynamic energy conservation and goal that environment optimized; The administrative staff of air conditioner was less likely to care about this a part in the past, the tactics adopted are usually to leave users to establish the control panel of air conditioner, because the user is generally more insufficient to the characteristic and knowledge of the air conditioner, cause the waste of the electricity .
中文摘要近来环境保护及节省能源议题受到国际社会的重视,本研究的重点是於空调系统之负载端,也就是预冷空调箱、空调箱及送风机安装伺服器、控制器、监测控制副机及温度器、湿度器、二氧化碳、移动感测器等各式感应设备,将感应设备所取得的资料即时透过无远弗届的网际网路传回空调知识管理系统,空调知识管理系统透过电脑化依不同逻辑判断,机动调整空调温度开关门槛值及排程,做到空调动态能源管理及环境优化的目标;过去空调管理人员较少关心此一部份,采取的策略通常是任由使用者设定空调控制面板,由於使用者一般对空调的特性及知识比较不足,造成电力的浪费。
-
Numerical experiments show that because Navier-Stokes equations at highReynolds number are a hyperbolic system,the boundary conditions are appli-cable to prescribe their boundary problems.
数值实验表明,在高Reynolds数下,由于Navier-Stokes方程呈现出很强的双曲型方程的性质,上述经过某些线性化处理得到的无反射边界条件是可以用来指定其边界值问题的。
-
It is proved by the analytical and numerical method that the modulus of the Z transform of a finite impulse response sequence has no extreme values at poles (with maximums along imaginary axis and no extreme values along real axis), and the negative second order derivative of the modulus normalized along frequency axis with respect to angular frequency has maximums at the poles.
根据实测瞬态电磁脉冲响应,较好地反演了导体球和导体长椭球的冲激响应,测得了它们的雷达截面和谐振频率。用解析与数值相结合的方法证明了有限冲激响应序列Z变换的模在极点无极值(沿虚轴有极大值,沿实轴无极值),而沿频率轴的归一化值对角频率的负二阶导数在极点有极大值。
-
Based on the compensate admittance model of Steinmetz theory a method is put forward which use instantaneous values of load current and voltage to denote it. The simulations and practical application in the design of SVC model have shown that the proposed method is very effective, accurate, and with fast response performance.
本文基于不平衡负荷的平衡化原理(即Steinmetz原理)的补偿导纳模型,采用负荷电流电压瞬时值采样的方法补偿无功功率,并将该方法应用于SVC样机的设计,结果表明,它们是快速有效和准确的,具有实际的工程应用价值。
-
Therefore, from the theoretical point of view, a solution of the constrained problem and the corresponding values of the Lagrange multipliers can be found not only by the well known method of multipliers but also by performing a single unconstrained minimization of the Hestenes-Powell augmented Lagrangian function on the product space of problem variables and multipliers.
因此,从理论的观点来看,原约束问题的解和对应的拉格朗日乘子值不仅可以用众所周知的乘子法求得,而且可以通过对Hestenes-Powell增广拉格朗日函数在原问题变量和乘子变量的积空间上执行一个单一的无约束极小化来获得。
-
Thereinto, quadratic interpolation is uesed in undimensional search, and Powell arithmetic is used to solve unconstrained minimziation.
其中,利用二次插值法进行一维搜索,选用Powell算法进行无约束极小化求解。
-
ResultsCyromazine had a great toxicity to firs t-instar larvae of housefly with LC 50 value of 43.896 mg/L, and showed less toxic actio n to third-instar larvae and adults of housefly, but reduced the pupate, ecl osion, female oviposition and egg hatch.
结果 灭蝇胺对家蝇 1日龄幼虫的 48h的LC5 0 值为 43 。896mg/L ,对 3日龄幼虫和成蝇的毒杀效果较差,但可引起幼虫化蛹率、羽化率以及雌成蝇产卵量和卵孵化率明显下降;阿维菌素对家蝇 1日龄、3日龄幼虫和成蝇表现出较强的急性毒杀作用,其 48hLC5 0 值分别为 0 。162 1mg/L、1.5546mg/L和 0 。2 10 3mg/L ,而对家蝇生长发育无不良影响。
-
The experimental determination of effective inter—diffusion coefficient of non—reactive condition of immobilized enzymes: The immobilized enzyme was immersed into the substrate of dextrine solution. The De value was measured as well as fitted theoretically.
无酶解反应发生条件下,对消除活性后的固定化酶有效内扩散系数的测定:在本实验系统下,建立相应实验设备,采用浸入法测定了基质糊精在固定化酶中的有效内扩散系数,并进行了De值的拟合计算。
-
Inwheat intercropped with soybean not only N situation could be improved butalso P situation could be.2In intercropping,the pH of soybean rhizospherewas decreased by increasing the R-Apase activity,which could decelerate thetransforming and fixing P fertilizer.3In both monoculture and intercroppingsystem,the soil pH of rhizosphere was affected by cropping system at two Plevel which only 0.1-4mm distance from the root surface,but the effect of S-Apase activity in the rhizospher soil by cropping system was less than3mm.In effect,the rhizosphere P was really available nutrient,and applyingP to rhizosphere was effective ways to reduce the P nutrient competition.4Inwheat/soybean intercropping,the peak stage of reduction ability of roots wasthe same as that of the root growth,so that the time compensation appearedin intensity of nutrient absorption.
间套作大豆、小麦、玉米根系Apase的差异又反映出大豆利用土壤磷的潜在能力最大,而玉米最小,可见禾谷类的小麦与大豆间套后不但能改善小麦的氮素营养状况还使磷素营养也得以好转。2)间套大豆根际pH值的下降,导致磷肥施入土壤后形成〓-P的比例显著提高,转化成〓-P等难溶性磷减少,说明间套的大豆能减缓肥料磷在土壤中的转化和固定,减少磷素向无效化方向转化。3)复合群体根际土壤pH值的影响一般只发生在0.1-4mm的根际微区,而土壤磷酸酶的影响供磷与否在距根表3mm以外都无多大差异,说明根际磷才是真正有效磷,根际施磷是解决磷素竞争的有效途径。4)。
- 推荐网络例句
-
It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
-
The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐
-
The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。